Downgraded PHP Bersion for the Code Styles job

Author: mnocon

.github/workflows/build.yaml

@@ -21,6 +21,10 @@ jobs:
 
         steps:
             -   uses: actions/checkout@v3
+            -   name: Setup PHP Action
+                uses: shivammathur/setup-php@v2
+                with:
+                    php-version: 8.0
             -   name: Set up Python ${{ matrix.python-version }}
                 uses: actions/setup-python@v3
                 with: