chore(deps): update css-loader requirement

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](webpack-contrib/css-loader@v5.1.2...v5.1.3)

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

packages/generator/app/templates/package.json

@@ -30,7 +30,7 @@
     "babel-loader": "^8.2.2",
     "classnames": "^2.2.6",
     "copy-webpack-plugin": "^6.4.1",
-    "css-loader": "^5.1.2",
+    "css-loader": "^5.1.3",
     "html-webpack-plugin": "^4.5.2",
     "postcss-import": "^14.0.0",
     "postcss-loader": "^4.2.0",