Revering [this change](https://github.com/fleetdm/fleet/pull/29215/files#diff-ff669b9f96ea80679f4651e9cf45ded57d5cd939d1e4e24977eb72d37d71e8bcR360) because the `smtp_settings` key is not documented in the GitOps docs, so we can't assume that people have it set already.