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] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "eslint-plugin-jest": "^23.20.0",
     "jest": "^24.9.0",
     "jest-circus": "^26.6.3",
-    "js-yaml": "^3.14.1",
+    "js-yaml": "^4.0.0",
     "prettier": "2.1.2",
     "ts-jest": "^24.3.0",
     "typescript": "^4.1.3"