Update CHANGELOG.md

Author: JetXu-LLM

CHANGELOG.md

@@ -5,10 +5,10 @@ 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).
 
-## [0.2.3] - 2024-11-24
+## [0.2.8] - 2025-03-19
 
 ### Optimized
-- Upgrade to codestral-latest
+- Upgrade to mistral-small-latest
 
 ## [0.2.3] - 2024-11-24