Allow Laravel 9

Author: barryvdh

composer.json

@@ -11,7 +11,7 @@
     ],
     "require": {
         "php": "^7.2|^8",
-        "illuminate/support": "^6|^7|^8",
+        "illuminate/support": "^6|^7|^8|^9",
         "symfony/form": "^4|^5|^6",
         "symfony/validator": "^4|^5|^6",
         "symfony/twig-bridge": "^4|^5|^6",