Update CHANGELOG.md

Author: keveleigh

org.mixedrealitytoolkit.uxcore/CHANGELOG.md

@@ -7,6 +7,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 ### Fixed
 
 * Fixed build issue caused by `FontIconSelectorMigrationUtility` not being in an Editor-only assembly.
+* Added "Enable Button Select Pulse" binding to "Empty Button.prefab". [PR #1130](https://github.com/MixedRealityToolkit/MixedRealityToolkit-Unity/pull/1130)
 
 ## [4.0.0-pre.3] - 2026-05-20