docs(changelog): update changelog

Author: Omicron7

CHANGELOG.md

@@ -5,14 +5,20 @@ 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](https://github.com/CruGlobal/terraform-provider-semaphoreui/compare/v1.1.0...HEAD)
+## [Unreleased](https://github.com/CruGlobal/terraform-provider-semaphoreui/compare/v1.2.0...HEAD)
 
 ## [v1.0.0](https://github.com/CruGlobal/terraform-provider-semaphoreui/compare/v0.1.1...v1.0.0) - 2024-11-20
 
 ### Added
 
 - Initial release of the provider
 
+## [v1.2.0](https://github.com/CruGlobal/terraform-provider-semaphoreui/compare/v1.1.0...v1.2.0) - 2025-01-23
+
+### Fixed
+
+- fix(external_user): Refactor external_user from resource to data source. @Omicron7 (#18)
+
 ## [v1.1.0](https://github.com/CruGlobal/terraform-provider-semaphoreui/compare/v1.0.1...v1.1.0) - 2025-01-21
 
 ### Added
@@ -35,10 +41,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - chore(gomod): bump golang.org/x/crypto from 0.29.0 to 0.31.0 @[dependabot[bot]](https://github.com/apps/dependabot) (#13)
 - chore(github-actions): bump amannn/action-semantic-pull-request from 5.4.0 to 5.5.3 @[dependabot[bot]](https://github.com/apps/dependabot) (#8)
 - chore(github-actions): bump release-drafter/release-drafter from 5 to 6 @[dependabot[bot]](https://github.com/apps/dependabot) (#9)
-
 </details>
 ## [v1.0.1](https://github.com/CruGlobal/terraform-provider-semaphoreui/compare/main...v1.0.1) - 2024-11-26
-
 ### Fixed
 
 - fix: Update API client and fix GitHub workflows @Omicron7 (#6)