docs: update CHANGELOG

Author: poirierlouis

CHANGELOG.md

@@ -5,6 +5,10 @@ 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]
+
+------------------------
+
+## [0.6.1] - 2025-08-05
 ### Changed
 - explicitly set `public` visibility for `HttpStatus` enum.