chore(release): 6.12.0

# [6.12.0](https://gitlab.com/just-ci/templates/compare/v6.11.0...v6.12.0) (2022-11-15)

### Features

* arm64 image build using docker buildx ([5310c3b8](https://gitlab.com/just-ci/templates/commit/5310c3b85bd8ae975c3306069beefcb65ad93516))