Update rustls requirement from 0.21.7 to 0.22.0

[dependabot]

Updates the requirements on rustls to permit the latest version.

Release notes

Sourced from rustls's releases.

0.22.0

New features

• Configurable cryptography providers. The cryptography used by rustls is represented by the CryptoProvider trait. ring is now optional, but remains the default provider.
• Certificate revocation list (CRL) support. The default certificate verifier used in rustls can now be configured with CRLs to control revocation of client and server certificates.
• Optional support for cryptography from aws-lc-rs. Once the certification process completes , we will support FIPS mode using aws-lc-rs.
• Separate configuration of root hints in client certificate verifier. To deal with cross-signed client certificate topologies, the list of hints sent to a client can now be configured. The default behaviour remains to send the names of the configured root certificates.

Related libraries

There are some related libraries in the rustls ecosystem. If you depend on these libraries, you'll need at least these versions to be compatible with rustls 0.22:

rustls-pki-types = { version = "1" }
webpki-roots = { version = "0.26" }
rustls-webpki = { version = "0.102" }
rustls-pemfile = { version = "2" }
rustls-native-certs = { version = "0.7.0"}

Breaking changes

• Remove support for SCTs provided via TLS extension. Ecosystem support for this is rare compared to inclusion of SCTs in certificates.
• Rename WebPkiVerifier to WebPkiServerVerifier and add WebPkiClientVerifier.
• Remove default trait implementations in ServerCertVerifier/ClientCertVerifier so the trait doesn't depend on webpki. Instead the previous implementations are exposed as rustls::crypto::verify_tls12_signature, rustls::crypto::verify_tls13_signature and $PROVIDER.signature_verification_algorithms.supported_schemes(), using the crypto provider of your choice.
• Rework certificate auth verifiers construction into a builder. This covers both server and client certificate verifiers: call WebPkiServerVerifier::builder() and WebPkiClientVerifier::builder().
• Removed the crate features dangerous_configuration, secret_extraction and quic. The API features those previously gated are now available without a crate feature. Types previously gated on the dangerous_configuration feature now appear in danger modules in the same place.
• New types for keys and certificates. rustls::Certificate has been replaced with CertificateDer from the new rustls-pki-types crate. Likewise, rustls::PrivateKey has been replaced with rustls_pki_types::PrivateKeyDer. These types come in both owned and borrowed variants, like std::borrow::Cow, but some uses, like rustls::RootCertStore, required the owned (<'static>) variant.
• RootCertStore is now passed around wrapped in an Arc, to improve efficiency when creating a different verifier for different servers/clients but with the same roots.
• RootCertStore::add_parsable_certificates now takes a impl IntoIterator<Item = impl AsRef<[u8]>>.
• RootCertStore::add_server_trust_anchors became RootCertStore::extend.
• Traits exposed by rustls now require a Debug bound. Please exercise caution in using #[derive(Debug)] on types that contain secret data.
• The deprecated ConfigBuilder<ClientConfig, WantsClientCert>::with_single_cert fn was removed in favour of with_client_auth_cert (rustls/rustls@42cda46)
• Some types and values have moved to accommodate cryptography provider work:

Old	New
rustls::CipherSuiteCommon	rustls::crypto::CipherSuiteCommon
rustls::SupportedKxGroup	rustls::crypto::SupportedKxGroup
rustls::cipher_suite::*	rustls::crypto::ring::cipher_suite::*
rustls::Ticketer	rustls::crypto::ring::Ticketer
rustls::ALL_KX_GROUPS	rustls::crypto::ring::ALL_KX_GROUPS
rustls::ALL_CIPHER_SUITES	rustls::crypto::ring::ALL_CIPHER_SUITES
rustls::DEFAULT_CIPHER_SUITES	rustls::crypto::ring::DEFAULT_CIPHER_SUITES
rustls::kx_group::*	rustls::crypto::ring::kx_group::*
rustls::sign::any_ecdsa_type	rustls::crypto::ring::sign::any_ecdsa_type
rustls::sign::any_eddsa_type	rustls::crypto::ring::sign::any_eddsa_type
rustls::sign::any_supported_type	rustls::crypto::ring::sign::any_supported_type

Moved/renamed/new items

Moved

... (truncated)

Commits

• 4d1b762 Bump version to 0.22.0
• 381dcf9 Update dependencies
• 553f400 docs: link to SignatureSchemes from WebPkiSupportedAlgorithms
• 822f86e docs: link to ActiveKeyExchange::complete from SharedSecret
• e34d46d docs: link to SupportedKxGroup for ActiveKeyExchange doc
• a572b30 msgs: docstrings for KeyExchangeAlgorithms
• e7cb24f docs: re-order feature descriptions
• 50e43ce docs: consistently describe default features
• 4f5e24d docs: clarify tlsserver-mio/tlsclient-mio links
• 5ec414c docs: describe webpki-roots as simplest, not recommended
• Additional commits viewable in compare view

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[dependabot]

Superseded by #329.