chore(deps): update dependency google-cloud-workflows to v1.5.0 (GoogleCloudPlatform#7056)

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

Author: renovate-bot

workflows/cloud-client/requirements.txt

@@ -1 +1 @@
-google-cloud-workflows==1.4.1
+google-cloud-workflows==1.5.0