enable PHP 8.4 for static analysis

Author: codemasher

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
-#          - "8.4"
+          - "8.4"
 
     steps:
       - name: "Checkout"