Bump cssdb from 7.9.0 to 7.10.0

Bumps [cssdb](https://github.com/csstools/cssdb) from 7.9.0 to 7.10.0.
- [Release notes](https://github.com/csstools/cssdb/releases)
- [Changelog](https://github.com/csstools/cssdb/blob/main/CHANGELOG.md)
- [Commits](csstools/cssdb@v7.9.0...v7.10.0)

---
updated-dependencies:
- dependency-name: cssdb
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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