chore: add changelog

Author: HedwigJDoets

packages/pluggableWidgets/combobox-web/CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Fixed
+
+- We fixed an issue where validation was not connected to combobox, causing issues for screenreaders.
+
 ## [2.6.0] - 2025-09-26
 
 ### Changed