adds tests for PHP 8.3, 8.4

Author: filecage

.github/workflows/tests.yaml

@@ -9,7 +9,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [ "8.0", "8.1", "8.2" ]
+        php: [ "8.0", "8.1", "8.2", "8.3", "8.4" ]
 
     steps:
       - name: Checkout