chore(deps-dev): bump postcss-nested from 4.2.1 to 4.2.2

Bumps [postcss-nested](https://github.com/postcss/postcss-nested) from 4.2.1 to 4.2.2.
- [Release notes](https://github.com/postcss/postcss-nested/releases)
- [Changelog](https://github.com/postcss/postcss-nested/blob/master/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss-nested/compare/4.2.1...4.2.2)

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

package.json

@@ -45,7 +45,7 @@
     "babel-loader": "^8.1.0",
     "babel-preset-react-app": "^9.1.2",
     "cypress": "^4.9.0",
-    "postcss-nested": "^4.2.1",
+    "postcss-nested": "^4.2.2",
     "prettier": "2.0.5",
     "prop-types": "^15.7.2",
     "react": "^16.13.1",