Don't support EOL Rubies.

Author: seanhandley

.github/workflows/ruby_ci.yml

@@ -8,23 +8,17 @@ on:
 
 jobs:
   test:
-
-    runs-on: ubuntu-latest
-
     strategy:
+      fail-fast: false
       matrix:
-        ruby-version: [3.0.1, 2.7.3, 2.6.7, 2.5.9]
-
+        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]
+    runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Ruby ${{ matrix.ruby-version }}
-        uses: ruby/setup-ruby@477b21f02be01bcb8030d50f37cfec92bfa615b6
-        with:
-          ruby-version: ${{ matrix.ruby-version }}
-          bundler-cache: true
-      - name: Install system dependencies
-        run: sudo apt-get install cmake make gcc libtool
-      - name: Install gems
-        run: bundle install
-      - name: Run tests
-        run: bundle exec rake spec
+    - 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