Bump js-yaml from 3.14.1 to 4.0.0

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 3.14.1 to 4.0.0. - [Release notes](https://github.com/nodeca/js-yaml/releases) - [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md) - [Commits](nodeca/js-yaml@3.14.1...4.0.0) Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -34,7 +34,7 @@
  "@vercel/ncc": "^0.26.2",
  "jest": "^24.9.0",
  "jest-circus": "^26.6.3",
- "js-yaml": "^3.14.1",
+ "js-yaml": "^4.0.0",
  "prettier": "^2.2.1",
  "ts-jest": "^24.3.0",
  "typescript": "^4.1.3"