Drop support for old CI and old JRuby, add new JRuby and MRI

Author: acook

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.3", "2.4", "2.5", "2.6", "2.7", "3.0", "3.1", "3.2", ruby-head, jruby-9.2, jruby-9.3, jruby-head]
+        ruby: ["2.3", "2.4", "2.5", "2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4", ruby-head, jruby-10.0, jruby-head]
 
     steps:
     - uses: actions/checkout@v4