Add Java 24 into test matrix

[Goooler]

Follow up #2470.

[Goooler]

Need to update Spotbugs...

[Goooler]

Something is wrong with Selfie?

https://scans.gradle.com/s/faaa7fn7fbcik/tests/overview?outcome=FAILED

[nedtwigg]

I think Selfie is operating as expected. The error message seems to be different on Java 24, and it tells you what line of the error message changed.

If that is to be expected, you can do:

if (runningJre < 24) {
  expectBlah
} else {
  expectBlah
}