Add php 8.4 to tests

Author: 8ctopus

.github/workflows/tests.yml

@@ -23,7 +23,7 @@ jobs:
 
     strategy:
       matrix:
-        php-version: [8.1, 8.3]
+        php-version: [8.1, 8.4]
 
         dependencies:
           - "highest"