Bump yaml from 2.1.2 to 2.2.1

Bumps [yaml](https://github.com/eemeli/yaml) from 2.1.2 to 2.2.1.
- [Release notes](https://github.com/eemeli/yaml/releases)
- [Commits](eemeli/yaml@v2.1.2...v2.2.1)

---
updated-dependencies:
- dependency-name: yaml
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>