Dependabot tried to upgrade JRuby to 10.0 in PR#988. The build failed, indicating incompatible Java versions. When looking into the JRuby 10.0 release documentation it shows that this version requires Java 21 at minimum.
I take from this that Operaton will not upgrade yet to JRuby 10, because it should stay on the current minimal Java version 17. Thus I would decline the PR. But I do think we should document this somewhere beyond this thread. But where would be the appropriate place?