CI against the latest stable JRuby version

JRuby 10 has been released

Author: Earlopain

.github/workflows/test.yml

@@ -38,15 +38,15 @@ jobs:
         run: bundle exec rake internal_investigation
 
   jruby:
-    name: JRuby 9.4
+    name: JRuby
     runs-on: ubuntu-latest
     steps:
       - name: checkout
         uses: actions/checkout@v5
       - name: set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: jruby-9.4
+          ruby-version: jruby # Latest stable JRuby version
           bundler-cache: true
       - name: spec
         run: bundle exec rake spec