Bump stylelint-scss from 3.9.3 to 3.9.4

Bumps [stylelint-scss](https://github.com/kristerkari/stylelint-scss) from 3.9.3 to 3.9.4.
- [Release notes](https://github.com/kristerkari/stylelint-scss/releases)
- [Changelog](https://github.com/kristerkari/stylelint-scss/blob/master/CHANGELOG.md)
- [Commits](stylelint-scss/stylelint-scss@3.9.3...3.9.4)

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

package.json

@@ -78,7 +78,7 @@
     "stylelint": "^10.1.0",
     "stylelint-config-standard": "^18.3.0",
     "stylelint-order": "^3.0.1",
-    "stylelint-scss": "^3.9.3",
+    "stylelint-scss": "^3.9.4",
     "uglifyjs-3-webpack-plugin": "^1.2.4",
     "unfetch": "^3.0.0",
     "webpack": "^4.39.2",