build.yml in briard-2.3

- old
+ new

@@ -9,13 +9,13 @@
     runs-on: ubuntu-latest
     env:
       SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Ruby 2.6
+    - name: Set up Ruby 2.7
       uses: actions/setup-ruby@v1
       with:
-        ruby-version: 2.6.x
+        ruby-version: 2.7.x
 
     - name: Build and test
       run: |
         gem install bundler
         bundle install