[ruby-talk:444631] [ANN] JRuby 9.4.12.0 Released

The JRuby community is pleased to announce the release of JRuby 9.4.12.0.

  - Homepage: https://www.jruby.org/
  - Download: Downloads — JRuby.org

JRuby 9.4.12.x targets Ruby 3.1 compatibility.

Thank you to our contributors this release, you help keep JRuby moving
forward!
Critical Fixes

  - Added additional locking to the new Class#subclasses implementation to
fix a concurrent modification error. #8602, #8603

Standard Library

  - jar-dependencies upgraded to 0.5.4 to fix an issue parsing Maven output
on Java versions 9 and higher. #8606, [#8515]

4 Issues and PRs resolved for 9.4.12.0

#8602 ConcurrentModificationException in subclasses map
#8603 Ensure subclass set prevents concurrent modification
#8606 No such file or directory snakeyaml-engine-2.9.jar in JRuby 9.4.11.0
#8615 Use jar-dependencies 0.5.4

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