chore(deps): update dependency google-auth to v1.26.1 (#75)

Author: renovate-bot

language/snippets/api/requirements.txt

@@ -1,3 +1,3 @@
 google-api-python-client==1.12.8
-google-auth==1.25.0
+google-auth==1.26.1
 google-auth-httplib2==0.0.4