ci.yml in zeebe-client-0.13.1

- old
+ new

@@ -17,17 +17,16 @@
       matrix:
         ruby-version:
         - '2.5'
         - '2.6'
         - '2.7'
+        - '3.0'
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby ${{ matrix.ruby-version }}
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby-version }}
-    - name: Install dependencies
-      run: |
-        bundle
+        bundler-cache: true  # runs 'bundle install' and caches installed gems automatically
     - name: Test
       run: |
         bundle exec rake ci