dependabot maven(deps): bump checkstyle from 10.19.0 to 10.20.0

Bumps checkstyle from 10.19.0 to 10.20.0.

Release notes

Sourced from checkstyle's releases.

checkstyle-10.20.0

Checkstyle 10.20.0 - https://checkstyle.org/releasenotes.html#Release_10.20.0

Breaking backward compatibility:

#15687 - JavadocMethodCheck: removed unnecessary tokens from acceptable

New:

#14424 - HideUtilityClassConstructor - Add option to skip validation based on list of annotations

Bug fixes:

#15831 - google_checks.xml not allowing eol left curly for switch statement with lambda-like construct

Commits

• 41e15b3 [maven-release-plugin] prepare release checkstyle-10.20.0
• 719ae40 doc: release notes for 10.20.0
• 4c67922 Issue #15831: enabled allowEmptySwitchBlockStatements property of WhitespaceA...
• 67b98ab Issue #14814: refactor checkline into iterative method
• 9db3909 Issue #14814: refactor findmatch into iteration method
• 853e2ba Issue #13345: Enable examples tests for ExplicitInitializationCheck
• 8e8df58 Issue #13345: Enable examples tests for CovariantEqualsCheck
• ca693c7 Issue #15829: Added test class for ConstructorsDeclarationGrouping
• c256c10 Issue #6207: Added XPath regression test for ClassTypeParameterName
• 42cf0ad Issue #15456: Specify violation messages for ArrayTrailingComma
• Additional commits viewable in compare view