fix(deps): update dependency @google-cloud/bigquery to v8

Author: renovate[bot]

webhooks/sync-orders-to-big-query/package.json

@@ -4,7 +4,7 @@
     "serverless-google-cloudfunctions": "*"
   },
   "dependencies": {
-    "@google-cloud/bigquery": "4.7.0",
+    "@google-cloud/bigquery": "8.1.0",
     "@google-cloud/kms": "1.6.3",
     "@moltin/request": "2.0.1",
     "fs": "0.0.2",