build(deps-dev): bump stylelint-scss from 3.14.2 to 3.21.0

Bumps [stylelint-scss](https://github.com/kristerkari/stylelint-scss) from 3.14.2 to 3.21.0.
- [Release notes](https://github.com/kristerkari/stylelint-scss/releases)
- [Changelog](https://github.com/stylelint-scss/stylelint-scss/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kristerkari/stylelint-scss/compare/3.14.2...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-lock.json

@@ -13251,16 +13251,16 @@
       }
     },
     "stylelint-scss": {
-      "version": "3.14.2",
-      "resolved": "https://registry.npmjs.org/stylelint-scss/-/stylelint-scss-3.14.2.tgz",
-      "integrity": "sha512-59/BkIEWyFoORiejDIQB2P2kmg0KcqMn7wtj1y5sRvS4N+Qh+Ng3hbKelOzgS+OM2Ezbai0uEev8xckXxkh9TQ==",
+      "version": "3.21.0",
+      "resolved": "https://registry.npmjs.org/stylelint-scss/-/stylelint-scss-3.21.0.tgz",
+      "integrity": "sha512-CMI2wSHL+XVlNExpauy/+DbUcB/oUZLARDtMIXkpV/5yd8nthzylYd1cdHeDMJVBXeYHldsnebUX6MoV5zPW4A==",
       "dev": true,
       "requires": {
         "lodash": "^4.17.15",
         "postcss-media-query-parser": "^0.2.3",
         "postcss-resolve-nested-selector": "^0.1.1",
         "postcss-selector-parser": "^6.0.2",
-        "postcss-value-parser": "^4.0.2"
+        "postcss-value-parser": "^4.1.0"
       }
     },
     "sugarss": {

package.json

@@ -80,7 +80,7 @@
     "sass-loader": "^12.2.0",
     "stylelint": "13.13.1",
     "stylelint-config-recommended-scss": "4.3.0",
-    "stylelint-scss": "3.14.2",
+    "stylelint-scss": "3.21.0",
     "webpack-bundle-analyzer": "4.4.2"
   },
   "scripts": {