Prepare changelog for v3.24.3

Author: paulbalandan

CHANGELOG.md

@@ -5,6 +5,11 @@ All notable changes to this library will be documented in this file:
 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).
 
+## [v3.24.3](https://github.com/NexusPHP/cs-config/compare/v3.24.2...v3.24.3) - 2024-09-07
+
+- Add new PHPStan errors to baseline
+- Update `phpdoc_separation` groups
+
 ## [v3.24.2](https://github.com/NexusPHP/cs-config/compare/v3.24.1...v3.24.2) - 2024-09-03
 
 - Allow multiline in class definition