Bump version to 0.1.2

Author: pederhan

CHANGELOG.md

@@ -5,7 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [0.1.2](https://github.com/unioslo/mreg-api/releases/tag/0.1.2) - 2026-03-18
 
 ### Added