Bump marked from 0.8.2 to 4.0.10 in /app

Bumps [marked](https://github.com/markedjs/marked) from 0.8.2 to 4.0.10.
- [Release notes](https://github.com/markedjs/marked/releases)
- [Changelog](https://github.com/markedjs/marked/blob/master/.releaserc.json)
- [Commits](https://github.com/markedjs/marked/compare/v0.8.2...v4.0.10)

---
updated-dependencies:
- dependency-name: marked
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

app/package.json

@@ -31,7 +31,7 @@
     "ignore": "^5.1.8",
     "ignore-styles": "^5.0.1",
     "lodash": "^4.17.20",
-    "marked": "^0.8.2",
+    "marked": "^4.0.10",
     "meteor-node-stubs": "^1.1.0",
     "moo": "^0.5.1",
     "nearley": "^2.19.1",