Fixes required version of the framework within `composer.json` (#5130)

composer.json

@@ -10,7 +10,7 @@
     "require": {
         "php": "^7.2",
         "fideloper/proxy": "^4.0",
-        "laravel/framework": "^6.0",
+        "laravel/framework": "^6.2",
         "laravel/tinker": "^1.0"
     },
     "require-dev": {