Bump sass-loader from 16.0.3 to 16.0.4

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 16.0.3 to 16.0.4.
- [Release notes](https://github.com/webpack-contrib/sass-loader/releases)
- [Changelog](https://github.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/sass-loader/compare/v16.0.3...v16.0.4)

---
updated-dependencies:
- dependency-name: sass-loader
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -58,7 +58,7 @@
     "postcss-loader": "^8.1.1",
     "postcss-scss": "^4.0.9",
     "sass-embedded": "^1.81.0",
-    "sass-loader": "^16.0.3",
+    "sass-loader": "^16.0.4",
     "style-loader": "^4.0.0",
     "stylelint": "^15.11.0",
     "stylelint-config-standard": "^34.0.0",