collab: Backfill `github_user_created_at` on users (#16600)

This PR adds a backfiller to backfill the `github_user_created_at`
column on users.

Release Notes:

- N/A

Marshall Bowers committed 2y ago

8a5fcc2c223f04ac291c7dbbadc44c2fb6118334

Parent: 2856842

Committed by GitHub <noreply@github.com> on 8/21/2024, 4:38:51 PM