build(deps-dev): bump eslint-config-stylelint from 17.1.0 to 21.0.0

Bumps [eslint-config-stylelint](https://github.com/stylelint/eslint-config-stylelint) from 17.1.0 to 21.0.0.
- [Release notes](https://github.com/stylelint/eslint-config-stylelint/releases)
- [Changelog](https://github.com/stylelint/eslint-config-stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/eslint-config-stylelint@17.1.0...21.0.0)

---
updated-dependencies:
- dependency-name: eslint-config-stylelint
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]