build(deps): bump analyze-css from 2.1.15 to 2.1.18

Bumps [analyze-css](https://github.com/macbre/analyze-css) from 2.1.15 to 2.1.18.
- [Release notes](https://github.com/macbre/analyze-css/releases)
- [Commits](macbre/analyze-css@v2.1.15...v2.1.18)

---
updated-dependencies:
- dependency-name: analyze-css
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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