Bump js-yaml from 4.2.0 to 4.3.1 (#2519)

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 4.2.0 to 4.3.1.
- [Changelog](https://github.com/nodeca/js-yaml/blob/4.3.1/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/4.2.0...4.3.1)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 4.3.1
  dependency-type: direct:production
...

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