Update changelog

CHANGELOG.md

@@ -1,6 +1,10 @@
 # Release Notes
 
 ## [Unreleased](https://github.com/pixelfed/pixelfed/compare/v0.11.9...dev)
+
+### Updates
+- Update FollowerService, add forget method to RelationshipService call to reduce load when mass purging ([347e4f59](https://github.com/pixelfed/pixelfed/commit/347e4f59))
+- Update FollowServiceWarmCache, improve handling larger following/follower lists ([61a6d904](https://github.com/pixelfed/pixelfed/commit/61a6d904))
 -  ([](https://github.com/pixelfed/pixelfed/commit/))
 
 ## [v0.11.9 (2023-08-21)](https://github.com/pixelfed/pixelfed/compare/v0.11.8...v0.11.9)