Added support for Laravel 9

Author: CosminBd

composer.json

@@ -11,7 +11,7 @@
     ],
     "require": {
         "php": ">=5.3.0",
-        "illuminate/support": "5.* || 6.* || 7.* || 8.*",
+        "illuminate/support": "5.* || 6.* || 7.* || 8.* || 9.*",
         "omnipay/common": "~3.0",
         "adrianbarbos/omnipay-mobilpay": "~1.2.1"
     },