Latest Ruby.

.github/workflows/awesomebot.yml

     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
-    - name: Set up Ruby 2.6
+    - name: Set up Ruby
       uses: actions/setup-ruby@v1
       with:
-        ruby-version: 2.6.x
+        ruby-version: 2.7.x
     - name: Install Awesome Bot
       run: gem install awesome_bot
     - name: Run Awesome Bot