Error Prone 2.13.0

• Handle all annotations with the simple name Generated in -XepDisableWarningsInGeneratedCode (#3094)
• Reconcile BugChecker#isSuppressed with suppression handling in ErrorProneScanner (#3094)
• Fix a bug in enclosingPackage (8fa64d4)
• Improve performance of fix application (186334b)
• Implicitly treat @AutoBuilder setter methods as @CanIgnoreReturnValue.
• Remove some obsolete checks (PublicConstructorForAbstractClass, HashCodeToString)

Release Diff: v2.12.1...v2.13.0.