fix(deps): update dependency @google-cloud/storage to v6 (#668)

Author: renovate-bot

samples/package.json

@@ -18,7 +18,7 @@
     "@google-cloud/automl": "^2.0.0",
     "mathjs": "^10.0.0",
     "@google-cloud/language": "^4.3.2",
-    "@google-cloud/storage": "^5.0.0",
+    "@google-cloud/storage": "^6.0.0",
     "yargs": "^16.0.0"
   },
   "devDependencies": {