ack/nack webhook does not recognize some user's public email addresses
See kernel-ark!886 (comment 502761091) for where the ack/nack webhook does not recognize @bmeneg's public email address.
2021-02-05T14:56:13.127 - [WARNING] - cki.webhook.ack_nack - Ignoring 'Acked-by bmeneg@redhat.com' since user does not have a public email address on their GitLab profile. Click on your avatar at the top right, go to settings, and ensure that your redhat.com address is set to your public email.
The address shows up at https://gitlab.com/bmeneg.