chore(deps-dev): bump autoprefixer from 9.8.2 to 9.8.4

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 9.8.2 to 9.8.4.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/master/CHANGELOG.md)
- [Commits](https://github.com/postcss/autoprefixer/compare/9.8.2...9.8.4)

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

package.json

@@ -41,7 +41,7 @@
     "@types/d3": "^5.7.2",
     "@types/react": "^16.9.38",
     "@types/react-dom": "^16.9.8",
-    "autoprefixer": "^9.8.2",
+    "autoprefixer": "^9.8.4",
     "babel-loader": "^8.1.0",
     "babel-preset-react-app": "^9.1.2",
     "cypress": "^4.9.0",