Bump stylelint-scss from 3.20.1 to 3.21.0

Bumps [stylelint-scss](https://github.com/kristerkari/stylelint-scss) from 3.20.1 to 3.21.0.
- [Release notes](https://github.com/kristerkari/stylelint-scss/releases)
- [Changelog](https://github.com/kristerkari/stylelint-scss/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kristerkari/stylelint-scss/compare/3.20.1...3.21.0)

---
updated-dependencies:
- dependency-name: stylelint-scss
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -48,7 +48,7 @@
     "stylelint-config-rational-order": "^0.1.2",
     "stylelint-no-browser-hacks": "^1.2.1",
     "stylelint-order": "^4.1.0",
-    "stylelint-scss": "^3.20.1",
+    "stylelint-scss": "^3.21.0",
     "ts-loader": "^9.2.5",
     "typescript": "^4.4.3",
     "webpack": "^5.52.1",