chore(deps): update dependency google-api-python-client to v2.6.0 (#118)

Author: renovate-bot

language/snippets/api/requirements.txt

@@ -1,3 +1,3 @@
-google-api-python-client==2.5.0
+google-api-python-client==2.6.0
 google-auth==1.30.1
 google-auth-httplib2==0.1.0