chore(deps-dev): bump @slidev/cli from 0.50.0-beta.7 to 0.50.0-beta.8 (…

…#264)

Bumps [@slidev/cli](https://github.com/slidevjs/slidev) from 0.50.0-beta.7 to 0.50.0-beta.8.
- [Release notes](https://github.com/slidevjs/slidev/releases)
- [Commits](slidevjs/slidev@v0.50.0-beta.7...v0.50.0-beta.8)

---
updated-dependencies:
- dependency-name: "@slidev/cli"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>