chore(deps): update dependency google-api-python-client to v2.26.1 (#1565)

Author: renovate-bot

samples/compute/requirements.txt

@@ -1,3 +1,3 @@
-google-api-python-client==2.25.0
+google-api-python-client==2.26.1
 google-auth==2.3.0
 google-auth-httplib2==0.1.0