laravel 9 support (#49)

Author: saqueib

composer.json

@@ -22,13 +22,13 @@
     }
   ],
   "require": {
-    "php": ">=7.3.0",
-    "laravel/framework": "~5.4.0|~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0"
+    "php": "^7.3|^8.0",
+    "laravel/framework": "~5.4.0|~5.5.0|~5.6.0|~5.7.0|~5.8.0|^6.0|^7.0|^8.0|^9.0"
   },
   "require-dev": {
-    "orchestra/testbench": "~3.8|^4.0",
+    "orchestra/testbench": "~3.8|^4.0|^5.0|^7.0",
     "mockery/mockery": "^0.9.4 || ~1.0",
-    "phpunit/phpunit": "~8.5"
+    "phpunit/phpunit": "~8.5|^9.0"
   },
   "autoload": {
     "psr-4": {