chore: update v4.2.1 release date in CHANGELOG to September 3, 2025

Author: Mat001

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [4.2.1] - January 3, 2025
+## [4.2.1] - September 3, 2025
 
 ### Fixed