chore(deps-dev): bump cssnano from 5.0.7 to 5.0.10 (swagger-api#2822)

Bumps [cssnano](https://github.com/cssnano/cssnano) from 5.0.7 to 5.0.10.
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/[email protected]@5.0.10)

---
updated-dependencies:
- dependency-name: cssnano
  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>
Co-authored-by: Vladimir Gorej <[email protected]>