We could try to cross-reference the email addresses with those in Slack, or get the full name from Heroku's API, but I don't think that's worth the additional complexity. It's clear from the email address who initiated the change, and we won't be using mentions for this anyway.
Closes DX-88.
Example messages: https://crewlabs.slack.com/archives/C3AGZ7B5J/p1708090350824529
We could try to cross-reference the email addresses with those in Slack, or get the full name from Heroku's API, but I don't think that's worth the additional complexity. It's clear from the email address who initiated the change, and we won't be using mentions for this anyway.