fix(deps): update dependency com.google.errorprone:error_prone_core to v2.20.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.errorprone:error_prone_core (source)	2.18.0 -> 2.20.0

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Release Notes

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

v2.20.0: Error Prone 2.20.0

Changes:

• This release is compatible with early-access builds of JDK 21.

New Checkers:

• InlineTrivialConstant
• UnnecessaryStringBuilder
• BanClassLoader
• DereferenceWithNullBranch
• DoNotUseRuleChain
• LockOnNonEnclosingClassLiteral
• MissingRefasterAnnotation
• NamedLikeContextualKeyword
• NonApiType

Fixes issues: #​2232, #​2243, #​2997, #​3301, #​3843, #​3903, #​3918, #​3923, #​3931, #​3945, #​3946

Full Changelog: google/error-prone@v2.19.1...v2.20.0

v2.19.1: Error Prone 2.19.1

This release fixes a binary compatibility issue when running on JDK 11, see #​3895

Full Changelog: google/error-prone@v2.19.0...v2.19.1

v2.19.0: Error Prone 2.19.0

New Checkers:

• NotJavadoc
• StringCaseLocaleUsage
• UnnecessaryTestMethodPrefix

Fixes issues: #​956, #​3504, #​3654, #​3703, #​3731, #​3737, #​3760, #​3779, #​3796, #​3809, #​3813

Full Changelog: google/error-prone@v2.18.0...v2.19.0

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[vlsi]

Need to fix

/home/runner/work/sigstore-java/sigstore-java/sigstore-java/src/main/java/dev/sigstore/tuf/model/Hashes.java:28: warning: [NotJavadoc] Avoid using `/**` for comments which aren't actually Javadoc.
  /** SHA_256 hash of the thing. * */

[loosebazooka]

ah yeah I'll fix this one

[loosebazooka]

fixed by #471

[renovate]

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