chore(deps-dev): bump cssnano from 7.0.7 to 7.1.0

---
updated-dependencies:
- dependency-name: cssnano
  dependency-version: 7.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]