chore: add back phpunit on multiple versions

Author: abaicus

.github/workflows/test-php.yml

@@ -28,7 +28,7 @@ jobs:
       strategy:
         fail-fast: false
         matrix:
-          php-versions: [ '8.0' ]
+          php-versions: [ '7.4', '8.0', '8.1', '8.2', '8.3' ]
       services:
         database:
           image: mysql:latest