This PR fixes the GitHub user retrieval in the database seed script. The users returned from the [list users](https://docs.github.com/en/rest/users/users?apiVersion=2022-11-28#list-users) endpoint don't have a `created_at` timestamp, so we need to fetch them individually. I want to rework this further at a later date, this is just a bandaid to get things working again. Release Notes: - N/A