Bump the frontend group with 4 updates

Bumps the frontend group with 4 updates: [autoprefixer](https://github.com/postcss/autoprefixer), [cssnano](https://github.com/cssnano/cssnano), [postcss](https://github.com/postcss/postcss) and [stylelint](https://github.com/stylelint/stylelint).


Updates `autoprefixer` from 10.4.19 to 10.4.20
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](postcss/autoprefixer@10.4.19...10.4.20)

Updates `cssnano` from 7.0.4 to 7.0.5
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/cssnano@7.0.4...cssnano@7.0.5)

Updates `postcss` from 8.4.40 to 8.4.41
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.40...8.4.41)

Updates `stylelint` from 16.8.1 to 16.8.2
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@16.8.1...16.8.2)

---
updated-dependencies:
- dependency-name: autoprefixer
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: frontend
- dependency-name: cssnano
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: frontend
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: frontend
- dependency-name: stylelint
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: frontend
...

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