Update changelog (#23515)

CHANGELOG.md

@@ -129,6 +129,7 @@ All notable changes to this project will be documented in this file.
 - Fix suspension worker crashing on S3-compatible setups without ACL support ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22487))
 - Fix possible race conditions when suspending/unsuspending accounts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22363))
 - Fix being stuck in edit mode when deleting the edited posts ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/22126))
+- Fix attached media uploads not being cleared when replying to a post ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23504))
 - Fix filters not being applied to some notification types ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23211))
 - Fix incorrect link in push notifications for some event types ([elizabeth-dev](https://github.com/mastodon/mastodon/pull/23286))
 - Fix some performance issues with `/admin/instances` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21907))