chore(deps): update dependency pytest to v6.1.2 [(#4921)](GoogleCloudPlatform/python-docs-samples#4921)

Co-authored-by: Charles Engelke <engelke@google.com>

Author: 2 people

packages/google-cloud-videointelligence/samples/quickstart/requirements-test.txt

@@ -1 +1 @@
-pytest==6.1.1
+pytest==6.1.2