Prepare changelog for release

Author: hahn-th

CHANGELOG.md

@@ -5,7 +5,9 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [UNRELEASED](https://github.com/hahn-th/homematicip-rest-api/compare/2.2.0..master)
+## [UNRELEASED](https://github.com/hahn-th/homematicip-rest-api/compare/2.3.0..master)
+
+## [2.3.0](https://github.com/hahn-th/homematicip-rest-api/compare/2.2.0..2.3.0) 2025-08-26
 
 ### Added