tweak gh action

Author: dbpolito

.github/workflows/ci-cd.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: [7.1, 7.2, 7.3, 7.4, 8.0]
+        version: ['7.1', '7.2', '7.3', '7.4', '8.0']
         type: ['', '-prod']
 
     steps: