docs: update changelog header

Author: jamiebrynes7

docs/docs/changelog.md

@@ -10,7 +10,7 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## v2.3.0 (2025-12-06)
 
 ### ✨ Features