Bump marked from 1.2.3 to 2.0.0 in /frontend

Bumps [marked](https://github.com/markedjs/marked) from 1.2.3 to 2.0.0.
- [Release notes](https://github.com/markedjs/marked/releases)
- [Changelog](https://github.com/markedjs/marked/blob/master/release.config.js)
- [Commits](markedjs/marked@v1.2.3...v2.0.0)

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

frontend/package.json

@@ -23,7 +23,7 @@
     "jspdf": "^1.5.3",
     "leaflet": "^1.7.1",
     "leaflet-easyprint": "^2.1.9",
-    "marked": "^1.2.3",
+    "marked": "^2.0.0",
     "moment": "^2.29.1",
     "node-sass": "^4.14.1",
     "sass": "^1.29.0",