CHANGELOG: AdminAPI return date with users

CHANGELOG.md

@@ -20,6 +20,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 - MRF (`FollowBotPolicy`): New MRF Policy which makes a designated local Bot account attempt to follow all users in public Notes received by your instance. Users who require approving follower requests or have #nobot in their profile are excluded.
 - Return OAuth token `id` (primary key) in POST `/oauth/token`.
+- AdminAPI: return `created_at` date with users.
 - `AnalyzeMetadata` upload filter for extracting image/video attachment dimensions and generating blurhashes for images. Blurhashes for videos are not generated at this time.
 - Attachment dimensions and blurhashes are federated when available.
 - Pinned posts federation