Omit empty image

Author: jorgemanrubia

.github/workflows/ci.yml

@@ -59,7 +59,7 @@ jobs:
 
     services:
       mysql:
-        image: ${{ (matrix.mode == 'MySQL' || matrix.mode == 'SaaS') && 'mysql:8.0' || '' }}
+        image: 'mysql:8.0'
         env:
           MYSQL_ALLOW_EMPTY_PASSWORD: yes
           MYSQL_DATABASE: fizzy_test