Bump version to laravel v8

composer.json

@@ -11,14 +11,14 @@
     "require": {
         "php": ">=7.2",
         "ext-json": "*",
-        "illuminate/support": "^7.0|^8.0",
-        "illuminate/console": "^7.0|^8.0",
+        "illuminate/support": "^8.0",
+        "illuminate/console": "^8.0",
         "guzzlehttp/guzzle": "^6.3",
         "socialiteproviders/manager": "^3.4"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.0",
-        "orchestra/testbench": "~4.0",
+        "orchestra/testbench": "^6.0",
         "codedungeon/phpunit-result-printer": "^0.26.2"
     },
     "autoload": {