fix(deps): update dependency @google-cloud/bigquery to v6 (#630)

Author: renovate-bot

asset/snippets/package.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "@google-cloud/asset": "^3.23.1",
-    "@google-cloud/bigquery": "^5.5.0",
+    "@google-cloud/bigquery": "^6.0.0",
     "@google-cloud/compute": "^2.0.0",
     "@google-cloud/storage": "^5.0.0",
     "uuid": "^8.0.0",