Bump highlight.js and vue-markdown in /web

Bumps [highlight.js](https://github.com/highlightjs/highlight.js) to 11.11.0 and updates ancestor dependency [vue-markdown](https://github.com/miaolz123/vue-markdown). These dependencies need to be updated together.


Updates `highlight.js` from 9.18.5 to 11.11.0
- [Release notes](https://github.com/highlightjs/highlight.js/releases)
- [Changelog](https://github.com/highlightjs/highlight.js/blob/main/CHANGES.md)
- [Commits](https://github.com/highlightjs/highlight.js/compare/9.18.5...11.11.0)

Updates `vue-markdown` from 2.2.4 to 2.2.4
- [Commits](https://github.com/miaolz123/vue-markdown/commits)

---
updated-dependencies:
- dependency-name: highlight.js
  dependency-type: indirect
- dependency-name: vue-markdown
  dependency-type: direct:production
...

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

web/package.json

@@ -40,7 +40,7 @@
     "vue": "^3.5.10",
     "vue-inline-svg": "^2.1.3",
     "vue-json-pretty": "^2.4.0",
-    "vue-markdown": "^2.1.3",
+    "vue-markdown": "^2.2.4",
     "vue-router": "^4.1.6",
     "vuex": "^4.0.2"
   },