chore: Update changelog (Unity-Technologies#2258)

Author: ashwinimurt

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -7,7 +7,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 Additional documentation and release notes are available at [Multiplayer Documentation](https://docs-multiplayer.unity3d.com).
 
-## [Unreleased]
+## [1.1.0] - 2022-10-19
 
 ### Added