CI: Remove PHP 8.1 because not stable yet

Author: jakubboucek

.github/workflows/code_analysis.yaml

@@ -23,7 +23,6 @@ jobs:
         php:
           - "7.4"
           - "8.0"
-          - "8.1"
 
     name: ${{ matrix.actions.name }} on PHP ${{ matrix.php }}
     runs-on: ubuntu-latest