chore(deps): update dependency google-auth to v1.11.2 [(#2724)](GoogleCloudPlatform/python-docs-samples#2724)

Co-authored-by: Leah E. Cole <[email protected]>

Author: leahecole

samples/snippets/requirements.txt

@@ -1,5 +1,5 @@
 grpcio==1.27.1
-google-auth==1.10.0
+google-auth==1.11.2
 google-auth-httplib2==0.0.3
 google-cloud==0.34.0
 google-cloud-storage==1.23.0