enable more modern ruby versions

Author: duritong

.github/workflows/ruby.yml

@@ -21,4 +21,4 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['2.5','2.7', '3.0', '3.1','head','jruby','jruby-head']
+        ruby: ['2.5','2.7', '3.0', '3.1','3.2','3.3','head','jruby','jruby-head']