chore(deps): Update dependency com.google.errorprone:error_prone_core to v2.21.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.errorprone:error_prone_core (source)	2.20.0 -> 2.21.1

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Release Notes

google/error-prone (com.google.errorprone:error_prone_core)

v2.21.1: Error Prone 2.21.1

Changes:

• Handle overlapping ranges in suppressedRegions (fixes #​4040)
• Add AddressSelection to discourage APIs that convert a hostname to a single address

Full Changelog: google/error-prone@v2.21.0...v2.21.1

v2.21.0: Error Prone 2.21.0

New Checkers:

• AttemptedNegativeZero: Prevents accidental use of -0, which is the same as 0. The floating-point negative zero is -0.0.
• ICCProfileGetInstance: Warns on uses of ICC_Profile.getInstance(String), due to JDK-8191622.
• MutableGuiceModule: Fields in Guice modules should be final.
• NullableOptional: Discourages @Nullable-annotated Optionals.
• OverridingMethodInconsistentArgumentNamesChecker: Arguments of overriding method are inconsistent with overridden method.

Fixed issues: #​3976, #​3986, #​4001, #​4002, #​4026, #​4027

Full Changelog: google/error-prone@v2.20.0...v2.21.0

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