Bump yaml from 2.3.4 to 2.4.0

Bumps [yaml](https://github.com/eemeli/yaml) from 2.3.4 to 2.4.0.
- [Release notes](https://github.com/eemeli/yaml/releases)
- [Commits](eemeli/yaml@v2.3.4...v2.4.0)

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

Signed-off-by: dependabot[bot] <support@github.com>