Bump js-yaml from 3.14.1 to 3.15.1
Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.14.1 to 3.15.1.
- [Changelog](https://github.com/nodeca/js-yaml/blob/3.15.1/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/3.14.1...3.15.1)
---
updated-dependencies:
- dependency-name: js-yaml
dependency-version: 3.15.1
dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>