release: Update CHANGELOG.md for 0.5.1

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.5.1] - 2024-04-24
+
 ### Fixed
 - Fix finite difference function in python unittest ([#128](https://github.com/Simple-Robotics/aligator/pull/128))
 
@@ -51,7 +53,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * This is the first release of `aligator`. This library is a joint effort between INRIA and LAAS-CNRS, and will be maintained and expanded in the future. Please provide constructive feedback and contribute!
 
-[Unreleased]: https://github.com/Simple-Robotics/aligator/compare/v0.5.0...HEAD
+[Unreleased]: https://github.com/Simple-Robotics/aligator/compare/v0.5.1...HEAD
+[0.5.1]: https://github.com/Simple-Robotics/aligator/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/Simple-Robotics/aligator/compare/v0.4.1...v0.5.0
 [0.4.1]: https://github.com/Simple-Robotics/aligator/compare/v0.4.0...v0.4.1
 [0.4.0]: https://github.com/Simple-Robotics/aligator/compare/v0.3.0...v0.4.0