feat: support Laravel 9 (#10)

Closes #9

Author: zhafri-shafiq

composer.json

@@ -13,7 +13,7 @@
   "require": {
     "php": ">=7.2",
     "guzzlehttp/guzzle": "^6.2|^7.0.1",
-    "illuminate/support": "^6.0|^7.0|^8.0",
+    "illuminate/support": "^6.0|^7.0|^8.0|^9.0",
     "symfony/psr-http-message-bridge": "^1.0|^2.0"
   },
   "require-dev": {