Update changelog.md

Author: ghbm-itk

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]
+## [1.2.0] - 2024-02-12
 
 ### Added
 
@@ -41,6 +41,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release
 
-[Unreleased] https://github.com/itk-dev-rpa/ITK-dev-shared-components/compare/1.1.0...HEAD
+[Unreleased] https://github.com/itk-dev-rpa/ITK-dev-shared-components/compare/1.2.0...HEAD
+[1.2.0] https://github.com/itk-dev-rpa/ITK-dev-shared-components/releases/tag/1.2.0
 [1.1.0] https://github.com/itk-dev-rpa/ITK-dev-shared-components/releases/tag/1.1.0
 [1.0.0] https://github.com/itk-dev-rpa/ITK-dev-shared-components/releases/tag/1.0.0