Change effective on 03 February 2020
As of today,
heroku certs:rollback is deprecated, due to low usage. The command will be end-of-life and removed from Heroku CLI on March 1st, 2020.
heroku certs:rollback functionality is easily replaced using
heroku certs:update. If your app is experiencing issues after updating it with a new certificate, you can always run
heroku certs:update to update your app with an older working certificate. Please see Dev Center for more information.