Bump sass-loader from 7.1.0 to 8.0.0 (#12027)

* Bump sass-loader from 7.1.0 to 8.0.0

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 7.1.0 to 8.0.0.
- [Release notes](https://github.com/webpack-contrib/sass-loader/releases)
- [Changelog](https://github.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/sass-loader/compare/v7.1.0...v8.0.0

)

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

* bump webpack