chore(deps): update dependency google-auth to v2 (#1489)

Author: renovate-bot

samples/compute/requirements.txt

@@ -1,3 +1,3 @@
 google-api-python-client==2.17.0
-google-auth==1.35.0
+google-auth==2.0.1
 google-auth-httplib2==0.1.0