Update CHANGELOG.md

Author: Sythivo

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## `0.2.1` - August 31, 2024
+
 ### Added
 - Added buffer support for `@net/server` body response. If a buffer is returned, it will be sent as the response body, works with `{ body = buffer, statusCode = 200 }`.