build(deps-dev): bump css-loader from 3.4.0 to 3.4.2

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 3.4.0 to 3.4.2.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](webpack/css-loader@v3.4.0...v3.4.2)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -37,7 +37,7 @@
     "chromedriver": "^78.0.1",
     "command-exists": "^1.2.8",
     "copy-webpack-plugin": "^5.1.1",
-    "css-loader": "^3.4.0",
+    "css-loader": "^3.4.2",
     "eslint": "^6.8.0",
     "eslint-plugin-vue": "^6.1.1",
     "geckodriver": "^1.19.1",