chore: update version in changelog

Author: jo-mueller

version_history.md

@@ -8,7 +8,7 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [0.6.dev3] - 2026-03-26
+## [0.6.dev4] - 2026-04-22
 
 ### Changed