chore(deps): update dependency pytest to v7.2.1 (#160)

Author: renovate-bot

bigquery-migration/snippets/requirements-test.txt

@@ -1,4 +1,4 @@
-pytest==7.2.0
+pytest==7.2.1
 google-cloud-testutils==1.3.3
 google-api-core==2.11.0
 google-cloud-storage==2.7.0