Bump @floating-ui/dom from 1.6.7 to 1.6.8 in /frontend

Bumps [@floating-ui/dom](https://github.com/floating-ui/floating-ui/tree/HEAD/packages/dom) from 1.6.7 to 1.6.8.
- [Release notes](https://github.com/floating-ui/floating-ui/releases)
- [Changelog](https://github.com/floating-ui/floating-ui/blob/master/packages/dom/CHANGELOG.md)
- [Commits](https://github.com/floating-ui/floating-ui/commits/@floating-ui/[email protected]/packages/dom)

---
updated-dependencies:
- dependency-name: "@floating-ui/dom"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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