Bump js-yaml from 3.15.1 to 3.15.2 (#2223)

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.15.1 to 3.15.2.
- [Changelog](https://github.com/nodeca/js-yaml/blob/3.15.2/CHANGELOG.md)
- [Commits](nodeca/js-yaml@3.15.1...3.15.2)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 3.15.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: George R. <george.raduta@cern.ch>

Author: dependabot[bot]