Upgrade Checkstyle 12.3.1 -> 13.0.0 #2053
Merged
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This PR contains the following updates:
12.3.1->13.0.0The Developer Platform team wishes you a happy festive period! 🎄

Release Notes
checkstyle/checkstyle (Checkstyle)
v13.0.0Checkstyle 13.0.0 - https://checkstyle.org/releasenotes.html#Release_13.0.0
Breaking backward compatibility:
#17430 - Use jdk21 as minimial required
Bug fixes:
#18409 - Remove duplicate violations in WhitespaceAfter and WhitespaceAround in sun_checks.xml
Other Changes:
jdk21: activate MissingNullCaseInSwitch for checkstyle project
Resolve Pitest Suppressions - imports
Conversion to Enhance Switch for AnnotationUseStyle Check Causing Jacoco Coverage Issue
Convert eligible classes to records
pitest: increase mutation coverage for indentation profile to 100%
Resolve Pitest Suppressions - filters
Fix xdocs Examples AST Consistency Test (Reduce suppressions list)
EmptyLineSeparator ignores configured tokens: reports violations for unlisted tokens and skips listed ones
Enforce file size on Java inputs
Store SARIF schema locally to avoid external network dependency
Update `JavadocCommentsTokenTypes.java` to new format of AST print