Bump raw-loader from 3.1.0 to 4.0.0 in /{{cookiecutter.app_name}}

Bumps [raw-loader](https://github.com/webpack-contrib/raw-loader) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/webpack-contrib/raw-loader/releases)
- [Changelog](https://github.com/webpack-contrib/raw-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/raw-loader/compare/v3.1.0...v4.0.0

)

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