Maybe fix the test

Author: justafish

.github/workflows/tests.yml

@@ -29,6 +29,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Setup SSH
+        run: ssh-keyscan -t rsa git.drupal.org >> ~/.ssh/known_hosts
+
       - uses: ddev/github-action-add-on-test@v1
         with:
           ddev_version: ${{ matrix.ddev_version }}