Update composer.json to support Symfony 6

Add Symfony 6 to composer.json

Author: rezaf-dev

composer.json

@@ -4,7 +4,7 @@
     "description": "Google Drive API Bundle",
     "require": {
         "google/apiclient": "^2.2",
-        "symfony/framework-bundle": "^4.0|^5.1"
+        "symfony/framework-bundle": "^4.0|^5.1|^6.0"
     },
     "license": "MIT",
     "authors": [