chore(deps): update dependency google-cloud-bigquery-storage to v2.6.3

Author: renovate-bot

samples/geography/requirements.txt

@@ -1,4 +1,4 @@
 geojson==2.5.0
 google-cloud-bigquery==2.23.3
-google-cloud-bigquery-storage==2.6.2
+google-cloud-bigquery-storage==2.6.3
 Shapely==1.7.1

samples/snippets/requirements.txt

@@ -1,5 +1,5 @@
 google-cloud-bigquery==2.23.3
-google-cloud-bigquery-storage==2.6.2
+google-cloud-bigquery-storage==2.6.3
 google-auth-oauthlib==0.4.5
 grpcio==1.39.0
 ipython==7.16.1; python_version < '3.7'