Bump loader-utils from 2.0.3 to 2.0.4

Bumps [loader-utils](https://github.com/webpack/loader-utils) from 2.0.3 to 2.0.4. - [Release notes](https://github.com/webpack/loader-utils/releases) - [Changelog](https://github.com/webpack/loader-utils/blob/v2.0.4/CHANGELOG.md) - [Commits](webpack/loader-utils@v2.0.3...v2.0.4) --- updated-dependencies: - dependency-name: loader-utils dependency-type: indirect ... Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]