chore(deps): bump js-yaml in /examples/newrelic-express-apm (#1360)

Bumps [js-yaml](https://github.com/nodeca/js-yaml) from 4.1.0 to 4.2.0.
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/commits)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 4.2.0
  dependency-type: indirect
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

examples/newrelic-express-apm/yarn.lock

@@ -3306,9 +3306,9 @@ joi@^17.3.0:
     "@sideway/pinpoint" "^2.0.0"
 
 js-yaml@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz"
-  integrity sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.2.0.tgz#2bd9e85682dd91bd469afb809d816043b3d49524"
+  integrity sha512-ePWsvanv0DWuDRsW8dnt+R4jQ31SCRCQ7hhNcPXZPsoBZiemuZNYGf7adZdqX2D86j6rvKp3RpCxVTSb8WQlOw==
   dependencies:
     argparse "^2.0.1"