Release v0.12.0 (#614)

Author: abhinav

.changes/unreleased/Added-20250224-083159.yaml

@@ -0,0 +1,5 @@
+## <a name="v0.12.0">v0.12.0</a> - 2025-03-06
+### Added
+- Add 'version' command as alternative to '--version' flag.
+### Fixed
+- gitlab: Fix rejection of `GITLAB_TOKEN` environment variable for authentication.

.changes/unreleased/Fixed-20250305-215537.yaml

@@ -5,6 +5,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html),
 and is generated by [Changie](https://github.com/miniscruff/changie).
 
+## <a name="v0.12.0">v0.12.0</a> - 2025-03-06
+### Added
+- Add 'version' command as alternative to '--version' flag.
+### Fixed
+- gitlab: Fix rejection of `GITLAB_TOKEN` environment variable for authentication.
+
 ## <a name="v0.11.0">v0.11.0</a> - 2025-02-24
 ### Added
 - Add 'branch squash' command to squash commits in a branch into a single commit and restack upstack branches.