chore: update changelog

Author: ddaribo

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [Unreleased]
+### Fixed
+- #### DateTime Input
+  - Ensure `igcChange` is emitted in case an incomplete mask value has been filled [#1695](https://github.com/IgniteUI/igniteui-webcomponents/issues/1695)
+
 ## [6.0.0] - 2025-04-29
 ### Changed
 - Minimum Node version required is now >= 20.