GROOVY-11899: Static methods in Traits do not compile in Java/Groovy joint compiliation

GROOVY-11887: Scripting support for JUnit Jupiter conditional execution

minor refactor: show rat failure in build log

GROOVY-11788: Bump JUnit to 6.0.3

GROOVY-11894: Provide a NullChecker for groovy-typecheckers

GROOVY-11901: Renovate process handling methods

GROOVY-11902: minor groovy-nio improvements

minor refactor: junit5 changes (tests weren't running)

fix stub test execution

minor refactor: remove Runtime.exec deprecation warnings

minor refactor: remove URL constructor deprecation warnings (cont'd)

minor refactor: remove URL constructor deprecation warnings

fix build for JDK24+ (take 2, test our explicit target version)

fix build for JDK24+

GROOVY-11897: Bump ant version to 1.10.16