[TASK] Run tests also under PHP 8.4

Author: simonschaufi

.github/workflows/code_analysis.yaml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php-versions: [ 7.4, 8.0, 8.1, 8.2, 8.3 ]
+        php-versions: [ 7.4, 8.0, 8.1, 8.2, 8.3, 8.4 ]
         actions:
           - name: "PHP Linter"
             run: "composer ci:php:lint"