chore(atlas-core): update changelogs

Author: uicontent

packages/atlas-core/CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [3.12.6] Atlas Core - 2026-1-27
+
 ### Fixed
 
 -   We have fixed an issue where switch widget screen reader only element still visible to user.