Run inspections on PHP 8.3

Author: timoschinkel

.github/workflows/pull_request.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
+        php-versions: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
     name: PHP ${{ matrix.php-versions }}
 
     steps: