[Feature] Update Java/JDK to 21 #374
Description
Is there an existing feature request for this?
- I have searched the existing issues
Is your feature related to a problem? Please describe.
KC supports Java 21 since version 25.0.0.
Upate to Java 21 once KC does no longer support Java 17.
Describe the solution you'd like
No response
Describe alternatives you've considered
No response
Anything else?
No response