Update errorproneVersion to v2.30.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.errorprone:error_prone_core (source)	2.29.2 -> 2.30.0
com.google.errorprone:error_prone_annotations (source)	2.29.2 -> 2.30.0

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Release Notes

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

v2.30.0: Error Prone 2.30.0

New checks:

• AutoValueBoxedValues: Detects unnecessary boxing in AutoValue classes.
• DefaultLocale: Detects implicit use of the JVM default locale, which can result in differing behaviour between JVM executions.
• UnnecessaryBreakInSwitch: Remove unnecessary break statements in -> switches.

Closed issues: #​632, #​4487

Full changelog: google/error-prone@v2.29.2...v2.30.0

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