ui: bump unplugin-vue-markdown from 29.1.0 to 29.2.0 in /ui

Bumps [unplugin-vue-markdown](https://github.com/unplugin/unplugin-vue-markdown) from 29.1.0 to 29.2.0.
- [Release notes](https://github.com/unplugin/unplugin-vue-markdown/releases)
- [Commits](unplugin/unplugin-vue-markdown@v29.1.0...v29.2.0)

---
updated-dependencies:
- dependency-name: unplugin-vue-markdown
  dependency-version: 29.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]