Update changelog

Author: petrzpav

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [Unreleased]
+## [1.2.0-rc.1] - 2025-06-20
 
 ## [1.1.2] - 2025-06-11
 
@@ -359,7 +359,7 @@ _Stable release based on [0.1.0-rc.1]._
 
 - New changelog file.
 
-[Unreleased]: https://https://github.com/internetguru/laravel-model-browser/compare/staging...dev
+[1.2.0-rc.1]: https://github.com/internetguru/laravel-model-browser/releases/tag/v1.1.2
 [1.1.2]: https://https://github.com/internetguru/laravel-model-browser/compare/v1.1.1...v1.1.2
 [1.1.1]: https://https://github.com/internetguru/laravel-model-browser/compare/v1.1.0...v1.1.1
 [1.1.0]: https://https://github.com/internetguru/laravel-model-browser/compare/v1.0.3...v1.1.0