Bump sass-loader from 8.0.2 to 12.4.0

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 8.0.2 to 12.4.0.
- [Release notes](https://github.com/webpack-contrib/sass-loader/releases)
- [Changelog](https://github.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md)
- [Commits](webpack/sass-loader@v8.0.2...v12.4.0)

---
updated-dependencies:
- dependency-name: sass-loader
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]