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/api-client/manager/requirements.txt

@@ -3,7 +3,7 @@ flaky==3.6.1
 gcp-devrel-py-tools==0.0.15
 google-api-python-client==1.7.11
 google-auth-httplib2==0.0.3
-google-auth==1.10.0
+google-auth==1.11.2
 google-cloud-iot==0.3.0
 google-cloud-pubsub==1.1.0
 oauth2client==4.1.3