build(deps): bump marked from 4.0.14 to 4.0.15 (nodejs#4579)

Bumps [marked](https://github.com/markedjs/marked) from 4.0.14 to 4.0.15.
- [Release notes](https://github.com/markedjs/marked/releases)
- [Changelog](https://github.com/markedjs/marked/blob/master/.releaserc.json)
- [Commits](markedjs/marked@v4.0.14...v4.0.15)

---
updated-dependencies:
- dependency-name: marked
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "jstransformer-handlebars": "^1.2.0",
     "junk": "^3.1.0",
     "lodash.defaultsdeep": "^4.6.1",
-    "marked": "^4.0.14",
+    "marked": "^4.0.15",
     "metalsmith": "^2.4.2",
     "metalsmith-collections": "^0.9.0",
     "metalsmith-feed": "^1.0.0",