chore(deps): bump js-yaml and coveralls (#102)

Bumps [js-yaml](https://github.com/nodeca/js-yaml) to 3.14.1 and updates ancestor dependency [coveralls](https://github.com/nickmerwin/node-coveralls). These dependencies need to be updated together.


Updates `js-yaml` from 3.6.1 to 3.14.1
- [Release notes](https://github.com/nodeca/js-yaml/releases)
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](nodeca/js-yaml@3.6.1...3.14.1)

Updates `coveralls` from 2.13.3 to 3.1.1
- [Release notes](https://github.com/nickmerwin/node-coveralls/releases)
- [Commits](https://github.com/nickmerwin/node-coveralls/commits/3.1.1)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-type: indirect
- dependency-name: coveralls
  dependency-type: direct:development
...

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>