Drop unsupported Ruby versions

.github/workflows/ruby.yml

@@ -22,27 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [2.3, 2.4, 2.5, 2.6, 2.7]
-        rails: ["4.1", "4.2", "5.0", "5.2.3", "6.0"]
-        exclude:
-          - ruby: "2.4"
-            rails: "4.1"
-          - ruby: "2.4"
-            rails: "4.2"
-          - ruby: "2.4"
-            rails: "6.0"
-          - ruby: "2.5"
-            rails: "4.1"
-          - ruby: "2.5"
-            rails: "4.2"
-          - ruby: "2.6"
-            rails: "4.1"
-          - ruby: "2.6"
-            rails: "4.2"
-          - ruby: "2.7"
-            rails: "4.1"
-          - ruby: "2.7"
-            rails: "4.2"
+        ruby: [3.0, 3.2, 3.3]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Ruby
@@ -51,4 +31,4 @@ jobs:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Run tests
-      run: bundle exec rake
+      run: bundle exec appraisal rake test