Added changelog entry

Author: Secticide

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -21,6 +21,7 @@ however, it has to be formatted properly to pass verification tests.
 
 ### Changed
 - Changed default input action asset name from New Controls to New Actions.
+- Added disabling of action maps in rebinding UI sample.
 
 ## [1.13.0] - 2025-02-05