Update protobuf to 5.28.3

[pyup-bot]

This PR updates protobuf from 3.17.0 to 5.28.3.

Changelog

3.20.3

Java
* Refactoring java full runtime to reuse sub-message builders and prepare to
 migrate parsing logic from parse constructor to builder.
* Move proto wireformat parsing functionality from the private "parsing
 constructor" to the Builder class.
* Change the Lite runtime to prefer merging from the wireformat into mutable
 messages rather than building up a new immutable object before merging. This
 way results in fewer allocations and copy operations.
* Make message-type extensions merge from wire-format instead of building up
 instances and merging afterwards. This has much better performance.
* Fix TextFormat parser to build up recurring (but supposedly not repeated)
 sub-messages directly from text rather than building a new sub-message and
 merging the fully formed message into the existing field.
* This release addresses a [Security Advisory for Java users](https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-h4h5-3hr4-j3g2)

3.20.2

C++
* Reduce memory consumption of MessageSet parsing
* This release addresses a [Security Advisory for C++ and Python users](https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8gq9-2x98-w8hf)

3.20.1

PHP
* Fix building packaged PHP extension (9727)
* Fixed composer.json to only advertise compatibility with PHP 7.0+.  (9819)

Ruby
* Disable the aarch64 build on macOS until it can be fixed. (9816)

Other
* Fix versioning issues in 3.20.0

3.20.1rc1

PHP
* Fix building packaged PHP extension (9727)

Other
* Fix versioning issues in 3.20.0

3.20.0

2022-03-25 version 3.20.0 (C++/Java/Python/PHP/Objective-C/C/Ruby/JavaScript)

Ruby
* Dropped Ruby 2.3 and 2.4 support for CI and releases. (9311)
* Added Ruby 3.1 support for CI and releases (9566).
* Message.decode/encode: Add recursion_limit option (9218/9486)
* Allocate with xrealloc()/xfree() so message allocation is visible to the
 Ruby GC.  In certain tests this leads to much lower memory usage due to more
 frequent GC runs (9586).
* Fix conversion of singleton classes in Ruby (9342)
* Suppress warning for intentional circular require (9556)
* JSON will now output shorter strings for double and float fields when possible
 without losing precision.
* Encoding and decoding of binary format will now work properly on big-endian
 systems.
* UTF-8 verification was fixed to properly reject surrogate code points.
* Unknown enums for proto2 protos now properly implement proto2's behavior of
 putting such values in unknown fields.

Java
* Revert "Standardize on Array copyOf" (9400)
* Resolve more java field accessor name conflicts (8198)
* Don't support map fields in DynamicMessage.Builder.{getFieldBuilder,getRepeatedFieldBuilder}
* Fix parseFrom to only throw InvalidProtocolBufferException
* InvalidProtocolBufferException now allows arbitrary wrapped Exception types.
* Fix bug in `FieldSet.Builder.mergeFrom`
* Flush CodedOutputStream also flushes underlying OutputStream
* When oneof case is the same and the field type is Message, merge the
 subfield. (previously it was replaced.)’
* Add CheckReturnValue to some protobuf types
* Report original exceptions when parsing JSON
* Add more info to deprecated javadoc for set/get/has methods
* Fix initialization bug in doc comment line numbers
* Fix comments for message set wire format.

Kotlin
* Add test scope to kotlin-test for protobuf-kotlin-lite (9518)
* Add orNull extensions for optional message fields.
* Add orNull extensions to all proto3 message fields.

Python
* Dropped support for Python < 3.7 (9480)
* Protoc is now able to generate python stubs (.pyi) with --pyi_out
* Pin multibuild scripts to get manylinux1 wheels back (9216)
* Fix type annotations of some Duration and Timestamp methods.
* Repeated field containers are now generic in field types and could be used
 in type annotations.
*[Breaking change] Protobuf python generated codes are simplified. Descriptors and message
 classes' definitions are now dynamic created in internal/builder.py.
 Insertion Points for messages classes are discarded.
* has_presence is added for FieldDescriptor in python
* Loosen indexing type requirements to allow valid __index__() implementations
 rather than only PyLongObjects.
* Fix the deepcopy bug caused by not copying message_listener.
* Added python JSON parse recursion limit (default 100)
* Path info is added for python JSON parse errors
* Pure python repeated scalar fields will not able to pickle. Convert to list
 first.
* Timestamp.ToDatetime() now accepts an optional tzinfo parameter. If
 specified, the function returns a timezone-aware datetime in the given time
 zone. If omitted or None, the function returns a timezone-naive UTC datetime
 (as previously).
* Adds client_streaming and server_streaming fields to MethodDescriptor.
* Add "ensure_ascii" parameter to json_format.MessageToJson. This allows smaller
 JSON serializations with UTF-8 or other non-ASCII encodings.
* Added experimental support for directly assigning numpy scalars and array.
* Improve the calculation of public_dependencies in DescriptorPool.
* [Breaking Change] Disallow setting fields to numpy singleton arrays or repeated fields to numpy
 multi-dimensional arrays. Numpy arrays should be indexed or flattened explicitly before assignment.

Compiler
* Migrate IsDefault(const std::string*) and UnsafeSetDefault(const std::string*)
* Implement strong qualified tags for TaggedPtr
* Rework allocations to power-of-two byte sizes.
* Migrate IsDefault(const std::string*) and UnsafeSetDefault(const std::string*)
* Implement strong qualified tags for TaggedPtr
* Make TaggedPtr Set...() calls explicitly spell out the content type.
* Check for parsing error before verifying UTF8.
* Enforce a maximum message nesting limit of 32 in the descriptor builder to
 guard against stack overflows
* Fixed bugs in operators for RepeatedPtrIterator
* Assert a maximum map alignment for allocated values
* Fix proto1 group extension protodb parsing error
* Do not log/report the same descriptor symbol multiple times if it contains
 more than one invalid character.
* Add UnknownFieldSet::SerializeToString and SerializeToCodedStream.
* Remove explicit default pointers and deprecated API from protocol compiler

Arenas
* Change Repeated*Field to reuse memory when using arenas.
* Implements pbarenaz for profiling proto arenas
* Introduce CreateString() and CreateArenaString() for cleaner semantics
* Fix unreferenced parameter for MSVC builds
* Add UnsafeSetAllocated to be used for one-of string fields.
* Make Arena::AllocateAligned() a public function.
* Determine if ArenaDtor related code generation is necessary in one place.
* Implement on demand register ArenaDtor for InlinedStringField

C++
* Enable testing via CTest (8737)
* Add option to use external GTest in CMake (8736)
* CMake: Set correct sonames for libprotobuf-lite.so and libprotoc.so (8635) (9529)
* Add cmake option `protobuf_INSTALL` to not install files (7123)
* CMake: Allow custom plugin options e.g. to generate mocks (9105)
* CMake: Use linker version scripts (9545)
* Manually *struct Cord fields to work better with arenas.
* Manually destruct map fields.
* Generate narrower code
* Fix https://github.com/protocolbuffers/protobuf/issues/9378 by removing
 shadowed _cached_size_ field
* Remove GetPointer() and explicit nullptr defaults.
* Add proto_h flag for speeding up large builds
* Add missing overload for reference wrapped fields.
* Add MergedDescriptorDatabase::FindAllFileNames()
* RepeatedField now defines an iterator type instead of using a pointer.
* Remove obsolete macros GOOGLE_PROTOBUF_HAS_ONEOF and GOOGLE_PROTOBUF_HAS_ARENAS.

PHP
* Fix: add missing reserved classnames (9458)
* PHP 8.1 compatibility (9370)

C
* Fix trim warnings (9182)
* Fixes NullReferenceException when accessing FieldDescriptor.IsPacked (9430)
* Add ToProto() method to all descriptor classes (9426)
* Add an option to preserve proto names in JsonFormatter (6307)

Objective-C
* Add prefix_to_proto_package_mappings_path option. (9498)
* Rename `proto_package_to_prefix_mappings_path` to `package_to_prefix_mappings_path`. (9552)
* Add a generation option to control use of forward declarations in headers. (9568)

3.20.0rc2

Ruby
* to_json will now use fewer decimal places to encode float/double in some cases, if the extra digits are not necessary for round-tripping

PHP
* to_json will now use fewer decimal places to encode float/double in some cases, if the extra digits are not necessary for round-tripping

3.20.0rc1

Ruby
* Dropped Ruby 2.3 and 2.4 support for CI and releases. (9311)
* Message.decode/encode: Add max_recursion_depth option (9218)
* Rename max_recursion_depth to recursion_limit (9486)
* Fix conversion of singleton classes in Ruby (9342)
* Suppress warning for intentional circular require (9556)
* JSON will now output shorter strings for double and float fields when possible
 without losing precision.
* Encoding and decoding of binary format will now work properly on big-endian
 systems.
* UTF-8 verification was fixed to properly reject surrogate code points.
* Unknown enums for proto2 protos now properly implement proto2's behavior of
 putting such values in unknown fields.

Java
* Revert "Standardize on Array copyOf" (9400)
* Resolve more java field accessor name conflicts (8198)
* Don't support map fields in DynamicMessage.Builder.{getFieldBuilder,getRepeatedFieldBuilder}
* Fix parseFrom to only throw InvalidProtocolBufferException
* InvalidProtocolBufferException now allows arbitrary wrapped Exception types.
* Fix bug in `FieldSet.Builder.mergeFrom`
* Flush CodedOutputStream also flushes underlying OutputStream
* When oneof case is the same and the field type is Message, merge the
 subfield. (previously it was replaced.)’
* Add CheckReturnValue to some protobuf types
* Report original exceptions when parsing JSON
* Add more info to deprecated javadoc for set/get/has methods
* Fix initialization bug in doc comment line numbers
* Fix comments for message set wire format.

Kotlin
* Add test scope to kotlin-test for protobuf-kotlin-lite (9518)
* Add orNull extensions for optional message fields.
* Add orNull extensions to all proto3 message fields.

Python
* Dropped support for Python < 3.7 (9480)
* Protoc is now able to generate python stubs (.pyi) with --pyi_out
* Pin multibuild scripts to get manylinux1 wheels back (9216)
* Fix type annotations of some Duration and Timestamp methods.
* Repeated field containers are now generic in field types and could be used
 in type annotations.
* Protobuf python generated codes are simplified. Descriptors and message
 classes' definitions are now dynamic created in internal/builder.py.
 Insertion Points for messages classes are discarded.
* has_presence is added for FieldDescriptor in python
* Loosen indexing type requirements to allow valid __index__() implementations
 rather than only PyLongObjects.
* Fix the deepcopy bug caused by not copying message_listener.
* Added python JSON parse recursion limit (default 100)
* Path info is added for python JSON parse errors
* Pure python repeated scalar fields will not able to pickle. Convert to list
 first.
* Timestamp.ToDatetime() now accepts an optional tzinfo parameter. If
 specified, the function returns a timezone-aware datetime in the given time
 zone. If omitted or None, the function returns a timezone-naive UTC datetime
 (as previously).
* Adds client_streaming and server_streaming fields to MethodDescriptor.
* Add "ensure_ascii" parameter to json_format.MessageToJson. This allows smaller
 JSON serializations with UTF-8 or other non-ASCII encodings.
* Added experimental support for directly assigning numpy scalars and array.
* Improve the calculation of public_dependencies in DescriptorPool.
* [Breaking Change] Disallow setting fields to numpy singleton arrays or repeated fields to numpy
 multi-dimensional arrays. Numpy arrays should be indexed or flattened explicitly before assignment.

Compiler
* Migrate IsDefault(const std::string*) and UnsafeSetDefault(const std::string*)
* Implement strong qualified tags for TaggedPtr
* Rework allocations to power-of-two byte sizes.
* Migrate IsDefault(const std::string*) and UnsafeSetDefault(const std::string*)
* Implement strong qualified tags for TaggedPtr
* Make TaggedPtr Set...() calls explicitly spell out the content type.
* Check for parsing error before verifying UTF8.
* Enforce a maximum message nesting limit of 32 in the descriptor builder to
 guard against stack overflows
* Fixed bugs in operators for RepeatedPtrIterator
* Assert a maximum map alignment for allocated values
* Fix proto1 group extension protodb parsing error
* Do not log/report the same descriptor symbol multiple times if it contains
 more than one invalid character.
* Add UnknownFieldSet::SerializeToString and SerializeToCodedStream.
* Remove explicit default pointers and deprecated API from protocol compiler

Arenas
* Change Repeated*Field to reuse memory when using arenas.
* Implements pbarenaz for profiling proto arenas
* Introduce CreateString() and CreateArenaString() for cleaner semantics
* Fix unreferenced parameter for MSVC builds
* Add UnsafeSetAllocated to be used for one-of string fields.
* Make Arena::AllocateAligned() a public function.
* Determine if ArenaDtor related code generation is necessary in one place.
* Implement on demand register ArenaDtor for InlinedStringField

C++
* Enable testing via CTest (8737)
* Add option to use external GTest in CMake (8736)
* CMake: Set correct sonames for libprotobuf-lite.so and libprotoc.so (8635) (9529)
* Add cmake option `protobuf_INSTALL` to not install files (7123)
* CMake: Allow custom plugin options e.g. to generate mocks (9105)
* CMake: Use linker version scripts (9545)
* Manually *struct Cord fields to work better with arenas.
* Manually destruct map fields.
* Generate narrower code
* Fix https://github.com/protocolbuffers/protobuf/issues/9378 by removing
 shadowed _cached_size_ field
* Remove GetPointer() and explicit nullptr defaults.
* Add proto_h flag for speeding up large builds
* Add missing overload for reference wrapped fields.
* Add MergedDescriptorDatabase::FindAllFileNames()
* RepeatedField now defines an iterator type instead of using a pointer.
* Remove obsolete macros GOOGLE_PROTOBUF_HAS_ONEOF and GOOGLE_PROTOBUF_HAS_ARENAS.

PHP
* Fix: add missing reserved classnames (9458)

C
* Fix trim warnings (9182)
* Fixes NullReferenceException when accessing FieldDescriptor.IsPacked (9430)
* Add ToProto() method to all descriptor classes (9426)
* Add an option to preserve proto names in JsonFormatter (6307)

Objective-C
* Add prefix_to_proto_package_mappings_path option. (9498)
* Rename `proto_package_to_prefix_mappings_path` to `package_to_prefix_mappings_path`. (9552)
* Add a generation option to control use of forward declarations in headers. (9568)

3.19.6

Java
* Refactoring java full runtime to reuse sub-message builders and prepare to
 migrate parsing logic from parse constructor to builder.
* Move proto wireformat parsing functionality from the private "parsing
 constructor" to the Builder class.
* Change the Lite runtime to prefer merging from the wireformat into mutable
 messages rather than building up a new immutable object before merging. This
 way results in fewer allocations and copy operations.
* Make message-type extensions merge from wire-format instead of building up
 instances and merging afterwards. This has much better performance.
* Fix TextFormat parser to build up recurring (but supposedly not repeated)
 sub-messages directly from text rather than building a new sub-message and
 merging the fully formed message into the existing field.
* This release addresses a [Security Advisory for Java users](https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-h4h5-3hr4-j3g2)

3.19.5

C++
- Reduce memory consumption of MessageSet parsing
- This release addresses a [Security Advisory for C++ and Python users](https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8gq9-2x98-w8hf)

3.19.4

Python
* Make libprotobuf symbols local on OSX to fix issue 9395 (9435)

Ruby
* Fixed a data loss bug that could occur when the number of `optional` fields in a message is an exact multiple of 32. (9440).

PHP
* Fixed a data loss bug that could occur when the number of `optional` fields in a message is an exact multiple of 32. (9440).

3.19.3

Python
* Fix missing Windows wheel for Python 3.10 on PyPI

3.19.2

Java
* Improve performance characteristics of UnknownFieldSet parsing (9371)
* This release addresses a [Security Advisory for Java users](https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-wrvw-hg22-4m67)

3.19.1

Bazel
* Ensure that release archives contain everything needed for Bazel (9131)
* Align dependency handling with Bazel best practices (9165)

JavaScript
* Fix `ReferenceError: window is not defined` when getting the global object (9156)

Ruby
* Fix memory leak in MessageClass.encode (9150)

3.19.0

C++
* Make proto2::Message::DiscardUnknownFields() non-virtual
* Separate RepeatedPtrField into its own header file
* For default floating point values of 0, consider all bits significant
* cmake: support `MSVC_RUNTIME_LIBRARY` property (8851)
* Fix shadowing warnings (8926)
* Fix for issue 8484, constant initialization doesn't compile in msvc clang-cl environment (8993)
* Fix build on AIX and SunOS (8373) (9065)
* Add Android stlport and default toolchains to BUILD. (8290)

Java
* For default floating point values of 0, consider all bits significant
* Annotate `//java/com/google/protobuf/util/...` with nullness annotations
* Use ArrayList copy constructor (7853)

Kotlin
* Switch Kotlin proto DSLs to be implemented with inline value classes
*  Fixing inlining and deprecation for repeated string fields (9120)

Python
* Proto2 DecodeError now includes message name in error message
* Make MessageToDict convert map keys to strings (8122)
* Add python-requires in setup.py (8989)
* Add python 3.10 (9034)

JavaScript
* Skip exports if not available by CommonJS (8856)
* JS: Comply with CSP no-unsafe-eval. (8864)

PHP
* Added "object" as a reserved name for PHP (8962)

Ruby
* Override Map.clone to use Map's dup method (7938)
* Ruby: build extensions for arm64-darwin (8232)
* Add class method Timestamp.from_time to ruby well known types (8562)
* Adopt pure ruby DSL implementation for JRuby (9047)
* Add size to Map class (8068)
*  Fix for descriptor_pb.rb: google/protobuf should be required first (9121)

C
* Correctly set ExtensionRegistry when parsing with MessageParser, but using an already existing CodedInputStream (7246)
* [C] Make FieldDescriptor propertyName public (7642)

3.19.0rc2

Java
* Update changelog to reflect that we are not yet dropping Java 7 support after all

3.19.0rc1

C++
* Make proto2::Message::DiscardUnknownFields() non-virtual
* Separate RepeatedPtrField into its own header file
* For default floating point values of 0, consider all bits significant
* cmake: support `MSVC_RUNTIME_LIBRARY` property (8851)
* Fix shadowing warnings (8926)
* Fix for issue 8484, constant initialization doesn't compile in msvc clang-cl environment (8993)
* Fix build on AIX and SunOS (8373) (9065)
* Add Android stlport and default toolchains to BUILD. (8290)

Java
* This release drops support for Java 7. Use 3.18.x if you still need Java 7 support.
* For default floating point values of 0, consider all bits significant
* Annotate `//java/com/google/protobuf/util/...` with nullness annotations
* Use ArrayList copy constructor (7853)

Kotlin
* Switch Kotlin proto DSLs to be implemented with inline value classes

Python
* Proto2 DecodeError now includes message name in error message
* Make MessageToDict convert map keys to strings (8122)
* Add python-requires in setup.py (8989)
* Add python 3.10 (9034)

JavaScript
* Skip exports if not available by CommonJS (8856)
* JS: Comply with CSP no-unsafe-eval. (8864)

PHP
* Added "object" as a reserved name for PHP (8962)

Ruby
* Override Map.clone to use Map's dup method (7938)
* Ruby: build extensions for arm64-darwin (8232)
* Add class method Timestamp.from_time to ruby well known types (8562)
* Adopt pure ruby DSL implementation for JRuby (9047)
* Add size to Map class (8068)

C
* Correctly set ExtensionRegistry when parsing with MessageParser, but using an already existing CodedInputStream (7246)
* [C] Make FieldDescriptor propertyName public (7642)

3.18.3

C++
* Reduce memory consumption of MessageSet parsing
* This release addresses a [Security Advisory for C++ and Python users](https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8gq9-2x98-w8hf)

3.18.2

Java
* Improve performance characteristics of UnknownFieldSet parsing (9371)

3.18.1

Python
* Update setup.py to reflect that we now require at least Python 3.5 (8989)
* Performance fix for DynamicMessage: force GetRaw() to be inlined (9023)

Ruby
* Update ruby_generator.cc to allow proto2 imports in proto3 (9003)

3.18.0

C++
* Fix warnings raised by clang 11 (8664)
* Make StringPiece constructible from std::string_view (8707)
* Add missing capability attributes for LLVM 12 (8714)
* Stop using std::iterator (deprecated in C++17). (8741)
* Move field_access_listener from libprotobuf-lite to libprotobuf (8775)
* Fix 7047 Safely handle setlocale (8735)
* Remove deprecated version of SetTotalBytesLimit() (8794)
* Support arena allocation of google::protobuf::AnyMetadata (8758)
* Fix undefined symbol error around SharedCtor() (8827)
* Fix default value of enum(int) in json_util with proto2 (8835)
* Better Smaller ByteSizeLong
* Introduce event filters for inject_field_listener_events
* Reduce memory usage of DescriptorPool
* For lazy fields copy serialized form when allowed.
* Re-introduce the InlinedStringField class
* v2 access listener
* Reduce padding in the proto's ExtensionRegistry map.
* GetExtension performance optimizations
* Make tracker a static variable rather than call static functions
* Support extensions in field access listener
* Annotate MergeFrom for field access listener
* Fix incomplete types for field access listener
* Add map_entry/new_map_entry to SpecificField in MessageDifferencer. They
 record the map items which are different in MessageDifferencer's reporter.
* Reduce binary size due to fieldless proto messages
* TextFormat: ParseInfoTree supports getting field end location in addition to
 start.
* Fix repeated enum extension size in field listener
* Enable Any Text Expansion for Descriptors::DebugString()
* Switch from int{8,16,32,64} to int{8,16,32,64}_t

Java
* Fix errorprone conflict (8723)
* Removing deprecated TimeUtil class. (8749)
* Optimized FieldDescriptor.valueOf() to avoid array copying.
* Removing deprecated TimeUtil class.
* Add Durations.parseUnchecked(String) and Timestamps.parseUnchecked(String)
* FieldMaskUtil: Add convenience method to mask the fields out of a given proto.

JavaScript
* Optimize binary parsing of repeated float64
* Fix for optimization when reading doubles from binary wire format
* Replace toArray implementation with toJSON.

PHP
* Migrate PHP & Ruby to ABSL wyhash (8854)
* Added support for PHP 8.1 (currently in RC1) to the C extension (8964)
* Fixed PHP SEGV when constructing messages from a destructor. (8969)

Ruby
* Move DSL implementation from C to pure Ruby (8850)
* Fixed a memory bug with RepeatedField+. (8970)

Python
* Drops support for 2.7 and 3.5.

Other
* [csharp] ByteString.CreateCodedInput should use ArraySegment offset and count (8740)
* [ObjC] Add support for using the proto package to prefix symbols. (8760)
* field_presence.md: fix Go example (8788)

3.18.0rc2

C++
* Fix warnings raised by clang 11 (8664)
* Make StringPiece constructible from std::string_view (8707)
* Add missing capability attributes for LLVM 12 (8714)
* Stop using std::iterator (deprecated in C++17). (8741)
* Move field_access_listener from libprotobuf-lite to libprotobuf (8775)
* Fix 7047 Safely handle setlocale (8735)
* Remove deprecated version of SetTotalBytesLimit() (8794)
* Support arena allocation of google::protobuf::AnyMetadata (8758)
* Fix undefined symbol error around SharedCtor() (8827)
* Fix default value of enum(int) in json_util with proto2 (8835)
* Better Smaller ByteSizeLong
* Introduce event filters for inject_field_listener_events
* Reduce memory usage of DescriptorPool
* For lazy fields copy serialized form when allowed.
* Re-introduce the InlinedStringField class
* v2 access listener
* Reduce padding in the proto's ExtensionRegistry map.
* GetExtension performance optimizations
* Make tracker a static variable rather than call static functions
* Support extensions in field access listener
* Annotate MergeFrom for field access listener
* Fix incomplete types for field access listener
* Add map_entry/new_map_entry to SpecificField in MessageDifferencer. They
 record the map items which are different in MessageDifferencer's reporter.
* Reduce binary size due to fieldless proto messages
* TextFormat: ParseInfoTree supports getting field end location in addition to
 start.
* Fix repeated enum extension size in field listener
* Enable Any Text Expansion for Descriptors::DebugString()
* Switch from int{8,16,32,64} to int{8,16,32,64}_t

Java
* Fix errorprone conflict (8723)
* Removing deprecated TimeUtil class. (8749)
* Optimized FieldDescriptor.valueOf() to avoid array copying.
* Removing deprecated TimeUtil class.
* Add Durations.parseUnchecked(String) and Timestamps.parseUnchecked(String)
* FieldMaskUtil: Add convenience method to mask the fields out of a given proto.

JavaScript
* Optimize binary parsing of repeated float64
* Fix for optimization when reading doubles from binary wire format
* Replace toArray implementation with toJSON.

PHP
* Migrate PHP & Ruby to ABSL wyhash (8854)

Ruby
* Move DSL implementation from C to pure Ruby (8850)

Python
* Drops support for 2.7 and 3.5.

Other
* [csharp] ByteString.CreateCodedInput should use ArraySegment offset and count (8740)
* [ObjC] Add support for using the proto package to prefix symbols. (8760)
* field_presence.md: fix Go example (8788)

3.18.0rc1

C++
* Fix warnings raised by clang 11 (8664)
* Make StringPiece constructible from std::string_view (8707)
* Add missing capability attributes for LLVM 12 (8714)
* Stop using std::iterator (deprecated in C++17). (8741)
* Move field_access_listener from libprotobuf-lite to libprotobuf (8775)
* Fix 7047 Safely handle setlocale (8735)
* Remove deprecated version of SetTotalBytesLimit() (8794)
* Support arena allocation of google::protobuf::AnyMetadata (8758)
* Fix undefined symbol error around SharedCtor() (8827)
* Fix default value of enum(int) in json_util with proto2 (8835)
* Better Smaller ByteSizeLong
* Introduce event filters for inject_field_listener_events
* Reduce memory usage of DescriptorPool
* For lazy fields copy serialized form when allowed.
* Re-introduce the InlinedStringField class
* v2 access listener
* Reduce padding in the proto's ExtensionRegistry map.
* GetExtension performance optimizations
* Make tracker a static variable rather than call static functions
* Support extensions in field access listener
* Annotate MergeFrom for field access listener
* Fix incomplete types for field access listener
* Add map_entry/new_map_entry to SpecificField in MessageDifferencer. They
 record the map items which are different in MessageDifferencer's reporter.
* Reduce binary size due to fieldless proto messages
* TextFormat: ParseInfoTree supports getting field end location in addition to
 start.
* Fix repeated enum extension size in field listener
* Enable Any Text Expansion for Descriptors::DebugString()
* Switch from int{8,16,32,64} to int{8,16,32,64}_t

Java
* Fix errorprone conflict (8723)
* Removing deprecated TimeUtil class. (8749)
* Optimized FieldDescriptor.valueOf() to avoid array copying.
* Removing deprecated TimeUtil class.
* Add Durations.parseUnchecked(String) and Timestamps.parseUnchecked(String)
* FieldMaskUtil: Add convenience method to mask the fields out of a given proto.

JavaScript
* Optimize binary parsing of repeated float64
* Fix for optimization when reading doubles from binary wire format
* Replace toArray implementation with toJSON.

PHP
* Migrate PHP & Ruby to ABSL wyhash (8854)

Ruby
* Move DSL implementation from C to pure Ruby (8850)

Other
* [csharp] ByteString.CreateCodedInput should use ArraySegment offset and count (8740)
* [ObjC] Add support for using the proto package to prefix symbols. (8760)
* field_presence.md: fix Go example (8788)

3.17.3

**Python**
* Note: This is the last release to support Python 2.7. Future releases will require Python >= 3.5.

**C++**
* Introduce FieldAccessListener.
* Stop emitting boilerplate {Copy/Merge}From in each ProtoBuf class
* Fixed some uninitialized variable warnings in generated_message_reflection.cc.

**Kotlin**
* Fix duplicate proto files error (8699)

**Java**
* Fixed parser to check that we are at a proper limit when a sub-message has
 finished parsing.

**General**
* Support M1 (8557)

3.17.2

****Kotlin****
* Fix duplicate class error (8653)

****PHP****
* Fixed SEGV in sub-message getters for well-known types when message is unset
 (8670)

3.17.1

PHP
* Fixed PHP memory leaks and arginfo errors. (8614)
* Fixed JSON parser to allow multiple values from the same oneof as long as all but one are null.

Ruby
* Fixed memory bug: properly root repeated/map field when assigning. (8639)
* Fixed JSON parser to allow multiple values from the same oneof as long as all but one are null.

Links

• PyPI: https://pypi.org/project/protobuf
• Changelog: https://data.safetycli.com/changelogs/protobuf/
• Homepage: https://developers.google.com/protocol-buffers/

[pyup-bot]

Closing this in favor of #2697