Update CHANGELOG

Author: ibc

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Node: Make `worker.close()` close the worker process by sending a `WORKER_CLOSE` request through the channel instead of by sending a SIGINT signal ([PR #1534](https://github.com/versatica/mediasoup/pull/1534)).
 - Worker: Add initial AV1 codec support ([PR #1508](https://github.com/versatica/mediasoup/pull/1535)).
+- `SvcConsumer`: Fix K-SVC bitrate in `IncreaseLayer()` method ([PR #1535](https://github.com/versatica/mediasoup/pull/1535) by @vpalmisano).
 
 ### 3.15.8