Bump js-yaml from 3.12.1 to 3.14.0 in /exercism/javascript/leap
Bump js-yaml from 3.12.1 to 3.14.0 in /exercism/javascript/leap

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.12.1 to 3.14.0.
- [Release notes](https://github.com/nodeca/js-yaml/releases)
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/3.12.1...3.14.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
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