Add JRuby 10 to CI test matrices

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: yahonda

.github/workflows/test.yml

@@ -18,6 +18,8 @@ jobs:
           '3.2',
           ruby-head,
           ruby-debug,
+          jruby-10.0.5.0,
+          jruby-head,
           truffleruby,
           truffleruby-head
         ]

.github/workflows/test_11g.yml

@@ -18,6 +18,8 @@ jobs:
           '3.2',
           ruby-head,
           ruby-debug,
+          jruby-10.0.5.0,
+          jruby-head,
           truffleruby,
           truffleruby-head
         ]