Bump autoprefixer from 9.7.6 to 9.8.0 (#13903)

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 9.7.6 to 9.8.0.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/master/CHANGELOG.md)
- [Commits](https://github.com/postcss/autoprefixer/compare/9.7.6...9.8.0

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>