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

@@ -74,7 +74,7 @@
     "sass-loader": "^7.2.0",
     "stylelint": "^8.4.0",
     "stylelint-config-recommended-scss": "^3.3.0",
-    "stylelint-scss": "^3.9.3",
+    "stylelint-scss": "^3.9.4",
     "stylelint-webpack-plugin": "^0.10.5",
     "url-loader": "^2.1.0",
     "vue-loader": "^15.7.1",