release: Update CHANGELOG.md for 4.2.0

CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+## [4.2.0] - 2024-12-08
+
 ### Added
 - Add PR2 robots ([#210](https://github.com/Gepetto/example-robot-data/pull/210))
 - Add GO2 robots ([#239](https://github.com/Gepetto/example-robot-data/pull/239))
@@ -303,7 +305,8 @@ Added optionnal python helpers, which depend on pinocchio
 
 Initial release
 
-[Unreleased]: https://github.com/gepetto/example-robot-data/compare/v4.1.0...HEAD
+[Unreleased]: https://github.com/gepetto/example-robot-data/compare/v4.2.0...HEAD
+[4.2.0]: https://github.com/gepetto/example-robot-data/compare/v4.1.0...v4.2.0
 [4.1.0]: https://github.com/gepetto/example-robot-data/compare/v4.0.9...v4.1.0
 [4.0.9]: https://github.com/gepetto/example-robot-data/compare/v4.0.8...v4.0.9
 [4.0.8]: https://github.com/gepetto/example-robot-data/compare/v4.0.7...v4.0.8