Update js-yaml to 3.14.1

[yahavi]

Please include a summary of the change and which issue is fixed. Fixes # (issue number)

Type of change:

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update

Notes (delete after reading):

js-yaml 3.14.0 is vulnerable. See release notes of 3.14.1: https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md#3141---2020-12-07