php: test php 8.4

Author: Ark4ne

.github/workflows/php.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        php_version: ['8.1', '8.2', '8.3']
+        php_version: ['8.1', '8.2', '8.3', '8.4']
         laravel_version: ['^9.0', '^10.0', '^11.0']
         exclude:
           - php_version: '8.1'