Bump css-loader from 3.0.0 to 3.1.0

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 3.0.0 to 3.1.0.
- [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/v3.0.0...v3.1.0)

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

package.json

@@ -14,7 +14,7 @@
     "awesome-typescript-loader": "^5.0.0",
     "core-js": "^3.1.4",
     "cross-env": "5.2.0",
-    "css-loader": "3.0.0",
+    "css-loader": "3.1.0",
     "electron": "^5.0.7",
     "electron-builder": "^21.0.8",
     "electron-installer-snap": "^4.0.0",