chore(deps): bump marked from 17.0.6 to 18.0.0

Bumps [marked](https://github.com/markedjs/marked) from 17.0.6 to 18.0.0.
- [Release notes](https://github.com/markedjs/marked/releases)
- [Commits](markedjs/marked@v17.0.6...v18.0.0)

---
updated-dependencies:
- dependency-name: marked
  dependency-version: 18.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -45,7 +45,7 @@
     "express-session": "^1.18.0",
     "highlight.js": "^11.11.1",
     "lucide-svelte": "^1.0.1",
-    "marked": "^17.0.6",
+    "marked": "^18.0.0",
     "session-file-store": "^1.5.0",
     "svelte": "^5.55.2",
     "vite": "^8.0.7",