Bump marked from 0.3.19 to 4.0.10 in /client

Bumps [marked](https://github.com/markedjs/marked) from 0.3.19 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/v0.3.19...v4.0.10)

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

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

client/package.json

@@ -39,7 +39,7 @@
     "html-webpack-plugin": "^2.30.1",
     "lodash": "^4.17.4",
     "luxon": "^0.3.1",
-    "marked": "^0.3.12",
+    "marked": "^4.0.10",
     "mobx": "^3.4.1",
     "mobx-react": "^4.3.5",
     "node-sass": "^4.7.2",