php8.3 and php8.4 checks added

Author: Webklex

.github/workflows/tests.yaml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: ['8.0', 8.1, 8.2]
+        php: ['8.0', 8.1, 8.2, 8.3, 8.4]
 
     name: PHP ${{ matrix.php }}