.github/workflows/ci.yml in fb2rb-0.5.0 vs .github/workflows/ci.yml in fb2rb-0.6.0

@@ -7,27 +7,25 @@
       - name: Checkout
         uses: actions/checkout@v2
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
-      - name: Build
-        run: bundle install --jobs 4 --retry 3
+          ruby-version: '3.0'
+          bundler-cache: true
       - name: Lint
         run: bundle exec rake lint
   test:
     strategy:
       matrix:
-        ruby: [jruby, 2.4, 2.5, 2.6, 2.7]
-        platform: [ubuntu-latest, macos-latest, windows-latest]
-    runs-on: ${{ matrix.platform }}
+        ruby: ['jruby', '2.4', '2.5', '2.6', '2.7', '3.0']
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
-      - name: Build
-        run: bundle install --jobs 4 --retry 3
+          bundler-cache: true
       - name: Test
         run: bundle exec rake spec