chore(deps-dev): bump postcss-nested from 5.0.5 to 5.0.6

Bumps [postcss-nested](https://github.com/postcss/postcss-nested) from 5.0.5 to 5.0.6.
- [Release notes](https://github.com/postcss/postcss-nested/releases)
- [Changelog](https://github.com/postcss/postcss-nested/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss-nested/compare/5.0.5...5.0.6)

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

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

package.json

@@ -56,7 +56,7 @@
     "cypress": "^8.3.1",
     "postcss": "^8.3.6",
     "postcss-cli": "^8.3.1",
-    "postcss-nested": "^5.0.5",
+    "postcss-nested": "^5.0.6",
     "prettier": "2.3.2",
     "prop-types": "^15.7.2",
     "react": "^17.0.2",