Update ruby_ci.yml (#126)

Author: seanhandley

.github/workflows/ruby_ci.yml

@@ -13,12 +13,12 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest]
         # Due to https://github.com/actions/runner/issues/849, we have to use quotes for '3.0'
-        ruby: ['2.7', '3.0', '3.1', '3.2', '3.3', head, jruby, jruby-head, truffleruby, truffleruby-head]
+        ruby: ['2.7', '3.0', '3.1', '3.2', '3.3']
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
-    - run: bundle exec rake
+    - run: bundle exec rake