chore(deps): update dependency css-loader to v3.4.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
css-loader	devDependencies	patch	3.4.0 -> 3.4.1

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Release Notes

webpack-contrib/css-loader

### [`v3.4.1`](https://togithub.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md#​341httpsgithubcomwebpack-contribcss-loadercomparev340v341-2020-01-03) [Compare Source](https://togithub.com/webpack-contrib/css-loader/compare/v3.4.0...v3.4.1)

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