update CHANGELOG

Signed-off-by: Cedric Alfonsi <[email protected]>

CHANGELOG.md

@@ -3,6 +3,8 @@ All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [unreleased]
+
+## [2.9.0] - 2019-04-24
 ### Fixed
 - PB-220: Upgrade to CakePHP 3.7.7
 
@@ -630,7 +632,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - AP: User with plugin installed
 - AD: Admin
 
-[Unreleased]: https://github.com/passbolt/passbolt_api/compare/v2.8.4...HEAD
+[Unreleased]: https://github.com/passbolt/passbolt_api/compare/v2.9.0...HEAD
+[2.9.0]: https://github.com/passbolt/passbolt_api/compare/v2.8.4...v2.9.0
 [2.8.4]: https://github.com/passbolt/passbolt_api/compare/v2.8.3...v2.8.4
 [2.8.3]: https://github.com/passbolt/passbolt_api/compare/v2.8.2...v2.8.3
 [2.8.2]: https://github.com/passbolt/passbolt_api/compare/v2.8.1...v2.8.2