make java entrypoint executable

[parkervcp]

Set the file permissions to 755

Description

Make java entrypoint executable

resolves #173

All Submissions:

• [x] Have you ensured there aren't other open Pull Requests for the same update or change?
• [x] Have you created a new branch for your changes and PR from that branch and not from your master branch?

[QuintenQVD0]

They are going to revert the name collision.

https://github.com/adoptium/containers/pull/392#issuecomment-1677185360

[Software-Noob]

The filename clash has been fixed upstream https://github.com/adoptium/containers/pull/416

[QuintenQVD0]

The filename clash has been fixed upstream adoptium/containers#416

I know because we asked them to do that. but no need to revert this change here, it wont hurt or brake anything