clean JDK patch version in module-info.class

as seen in MJAR-275, JDK patch version in module-info.class is NOT included only when building with a newer JDK release using "--release" flag, see https://github.com/jvm-repo-rebuild/module-info

issue https://bugs.openjdk.org/browse/JDK-8318913 created in JDK to get a proper fix at javac level (probably for Java 22)

and waiting for that, we need a workaround to drop the JDK patch version in other cases: we'll need to define where is the best place – m-jar-p?m-compiler-p? other?