chore(deps): update dependency google-cloud-bigquery to v2.26.0 (#246)

Author: renovate-bot

dlp/snippets/requirements.txt

@@ -2,4 +2,4 @@ google-cloud-dlp==3.2.2
 google-cloud-storage==1.42.0
 google-cloud-pubsub==2.7.1
 google-cloud-datastore==2.1.6
-google-cloud-bigquery==2.25.2
+google-cloud-bigquery==2.26.0