Bump js-yaml in the npm_and_yarn group across 1 directory

Bumps the npm_and_yarn group with 1 update in the / directory: [js-yaml](https://github.com/nodeca/js-yaml).


Updates `js-yaml` from 3.14.2 to 3.15.0
- [Changelog](https://github.com/nodeca/js-yaml/blob/3.15.0/CHANGELOG.md)
- [Commits](nodeca/js-yaml@3.14.2...3.15.0)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 3.15.0
  dependency-type: indirect
...

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

Author: dependabot[bot]