Upversion to 4.6.0, switch to Eclipse 2023-06 update sites

[olkornii]

Signed-off-by: Oleksii Korniienko [email protected]

Pull Request Checklist

Code

• Are method-/class-/variable-names meaningful?
• Are methods concise, not too long?
• Are catch blocks catching precise Exceptions only (no catch all)?
• Is copyright with correct year in new files?
• Is there a JavaDoc in every class with description of a class and an author(and issue if suitable)?
• Is there a link to github project issue? (if needed)

Testing

• Does it work?
• Are the tests green on Jenkins? Is there a link to Jenkins build?

[odockal]

Also, please take a look at site/category.xml. there are defined dependencies used during reddeer installation into eclipse via p2 update site. See my previous commits for this changes.

[olkornii]

testPR