Update css-loader requirement from ^2.0.1 to ^3.0.0

Updates the requirements on [css-loader](https://github.com/webpack-contrib/css-loader) to permit the latest version.
- [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/v2.0.1...v3.0.0)

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

package.json

@@ -55,7 +55,7 @@
 		"babel-eslint": "^10.0.1",
 		"babel-jest": "^24.0.0",
 		"babel-loader": "^8.0.4",
-		"css-loader": "^2.0.1",
+		"css-loader": "^3.0.0",
 		"eslint": "^4.19.1",
 		"eslint-config-standard": "^11.0.0",
 		"eslint-friendly-formatter": "^4.0.1",