chore(deps): update dependency google-cloud-bigquery to v2.23.0 (#189)

Author: renovate-bot

bigquery-datatransfer/snippets/requirements-test.txt

@@ -1,4 +1,4 @@
-google-cloud-bigquery==2.22.1
+google-cloud-bigquery==2.23.0
 google-cloud-pubsub==2.6.1
 pytest==6.2.4
 mock==4.0.3