Bump php to v8.4 in composer file

Author: samuelwei

composer.json

@@ -8,7 +8,7 @@
   ],
   "license": "MIT",
   "require": {
-    "php": "^8.3",
+    "php": "^8.4",
     "ext-curl": "*",
     "ext-json": "*",
     "ext-simplexml": "*",