Update build to Gradle 8

[stempler]

Runs with Java 17

[emanuelaepure10]

I have finally a successful build.
I have an error thought

Error opening Zip file
  C:\Users\EmanuelaEpure\Documents\GitHub\hale-platform-update\hale-platform\build\plugins\org.h2.source_1.3.171.i20221102.jar
  -- or --
  C:\Users\EmanuelaEpure\Documents\GitHub\hale-platform-update\hale-build-support\updatesites\platform\plugins\org.h2.source_1.3.171.i20221102.jar
 -> Invalid CEN header (invalid extra data field size for tag: 0xbfef at 492)

but LGTM.

[florianesser]

LGTM. Builds for me also when upgrading the GeoTools dependency.

Note: hale»studio doesn't build for me yet with a platform created from this PR.

[stempler]

Thanks a lot for the feedback. I used the opportunity to also add the CI task previously prepared in another PR and adapt it to the Gradle update.

I have an error thought

These kind of error logs are expected. Ideally they won't happen in the future when all bundles have been created without those Zip file problems.