.github/workflows/main.yml in amqp-client-1.0.2 vs .github/workflows/main.yml in amqp-client-1.1.0

@@ -17,11 +17,11 @@
           --health-timeout 5s
           --health-retries 5
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['2.7', '3.0']
+        ruby: ['2.6', '2.7', '3.0']
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
@@ -30,6 +30,5 @@
       run: |
         bundle install
         bundle exec rake
       env:
         AMQP_PORT: ${{ job.services.rabbitmq.ports[5672] }}
-