chore: update changelog

CHANGELOG.md

@@ -5,7 +5,7 @@ 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]
+## [0.20.0] - 2024-02-03
 
 ### Added
 
@@ -377,7 +377,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Basic functions: cache, install, list, show, tooth init, and uninstall.
 
-[Unreleased]: https://github.com/lippkg/lip/compare/v0.19.0...HEAD
+[0.20.0]: https://github.com/lippkg/lip/compare/v0.19.0...v0.20.0
 [0.19.0]: https://github.com/lippkg/lip/compare/v0.18.1...v0.19.0
 [0.18.1]: https://github.com/lippkg/lip/compare/v0.18.0...v0.18.1
 [0.18.0]: https://github.com/lippkg/lip/compare/v0.17.0...v0.18.0