Upgrade javax.validation from 1.0.0.GA to 2.0.1.Final

To do the upgrade of javax.validation (PR) it is needed to check all GWT reps (uberfire, errai,wb etc) because the javax.validation version is not supported in these reps.
The version upgrade is needed for spring-boot and quarkus - so it should be upgraded in kie-parent but overwritten in all poms of GWT reps that doesn't support this new version by the old version. It is thought to add a dependency overwite in the root pom in those repo's to overwrite it to use the original older version
On the other hand existing overrides like this should be removed then.
All reps should be examined if they have an override or if the need the old version.