CI: Use JRuby 9.2.10.0
CI: Use JRuby 9.2.10.0

Release blog post for JRuby https://www.jruby.org/2020/02/18/jruby-9-2-10-0.html
lucasallan/concurrent-ruby,lucasallan/concurrent-ruby,lucasallan/concurrent-ruby,lucasallan/concurrent-ruby,lucasallan/concurrent-ruby