Bump postcss-scss from 4.0.3 to 4.0.4 (#6036)

Bumps [postcss-scss](https://github.com/postcss/postcss-scss) from 4.0.3 to 4.0.4.
- [Release notes](https://github.com/postcss/postcss-scss/releases)
- [Changelog](https://github.com/postcss/postcss-scss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss-scss@4.0.3...4.0.4)

---
updated-dependencies:
- dependency-name: postcss-scss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -184,7 +184,7 @@
     "postcss-import": "^14.1.0",
     "postcss-less": "^6.0.0",
     "postcss-sass": "^0.5.0",
-    "postcss-scss": "^4.0.3",
+    "postcss-scss": "^4.0.4",
     "prettier": "2.6.2",
     "remark-cli": "^10.0.1",
     "sugarss": "^4.0.1",