Update changelog

CHANGELOG.md

@@ -4,6 +4,7 @@
 ### Added
 - Added ```BANNED_USERNAMES``` .env var, an optional comma separated string to ban specific usernames from being used ([6cdd64c6](https://github.com/pixelfed/pixelfed/commit/6cdd64c6))
 - Added RestrictedAccess middleware for Restricted Mode ([17c1a83d](https://github.com/pixelfed/pixelfed/commit/17c1a83d))
+- Added FailedJob garbage collection ([5d424f12](https://github.com/pixelfed/pixelfed/commit/5d424f12))
 
 ### Fixed
 - Fixed Story Compose bug affecting postgres instances ([#1918](https://github.com/pixelfed/pixelfed/pull/1918))