add PHP 8 support

Author: mateusjatenee

composer.json

@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "php": "^7.4",
+        "php": "^7.4|^8.0",
         "illuminate/contracts": "^8.0",
         "illuminate/support": "^8.0",
         "laravel/dusk": "^6.0",