spock-junit6 released to support spring-boot4 tests.

Note that artifact name was changed, but not overall versioning (to avoid mistakes).

Also, spock-junit5 1.3.0 released for junit 5.11 and 1.4.1 for junit 5.12-5.14

Changes:

* API compatibility, ofc.

* Non-static fields initialization order changed (junit 5.11 change)

* LifecycleMethodExecutionExceptionHandler support

* AutoCloseable values (auto closing) support (CloseableResource was deprecated)