Add version in changelog

Author: otsch

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [3.4.3] - 2025-04-03
 ### Fixed
 * When providing an empty base selector to an `Html` step (`Html::each('')`, `Html::first('')`, `Html::last('')`), it won't fail with an error, but instead log a warning, that it most likely doesn't make sense.
 * The `Step::keep()` methods now also work when applied to child steps within a group step.