Add PHP 8.4 and 8.3 to CI test matrix

Expand test coverage to include newer PHP versions (8.4 and 8.3)
alongside existing 8.2 and 8.1 support.

Author: parsilver

.github/workflows/run-tests.yml

@@ -8,11 +8,11 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        os: 
+        os:
           - ubuntu-latest
           - windows-latest
-        php: [8.2, 8.1]
-        stability: 
+        php: [8.4, 8.3, 8.2, 8.1]
+        stability:
           - prefer-lowest
           - prefer-stable