Merge pull request #208 from CPS-IT/task/php-version

[TASK] Use PHP 8.1 in CGL workflow

Author: eliashaeussler

.github/workflows/cgl.yaml

@@ -19,8 +19,8 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          # @todo Use PHP 8.4 once PHP-CS-Fixer supports PHP 8.4
-          php-version: 8.3
+          # We use the minimum supported PHP version
+          php-version: 8.1
           tools: composer:v2, composer-require-checker, composer-unused
           coverage: none