chore(deps): update dependency google-cloud-storage to v2.7.0 (#426)

* chore(deps): update dependency google-cloud-storage to v2.7.0

* docs(samples): removed batch_process_documents_sample_bad_input_test

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: holtskinner

packages/google-cloud-documentai/samples/snippets/batch_process_documents_sample_bad_input_test.py

@@ -1,2 +1,2 @@
 google-cloud-documentai==2.4.0
-google-cloud-storage==2.6.0
+google-cloud-storage==2.7.0