Bump css-loader from 5.1.3 to 5.2.0 (#15961)

Bump css-loader from 5.1.3 to 5.2.0 (#15961)

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 5.1.3 to 5.2.0.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/css-loader/compare/v5.1.3...v5.2.0)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>