docs: Add changelog entry

Author: SapiensAnatis

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - [connect] Add method `add_to_queue` to `Spirc` to add tracks, episodes, albums and playlists to the queue
 - [playback] Add `AddedToQueue` player event, emitting when a track was added to the queue with `Spirc::add_to_queue`
+- [playback] Add support in the `alsa` backend for playing local files at sample rates other than 44,100 Hz
 
 ### Changed