chore(deps-dev): bump autoprefixer from 9.7.4 to 9.7.6

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 9.7.4 to 9.7.6.
- [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/9.7.4...9.7.6)

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

package.json

@@ -24,7 +24,7 @@
     "@types/d3": "^5.7.2",
     "@types/react": "^16.9.31",
     "@types/react-dom": "^16.9.6",
-    "autoprefixer": "^9.7.5",
+    "autoprefixer": "^9.7.6",
     "babel-loader": "^8.1.0",
     "babel-preset-react-app": "^9.1.2",
     "cypress": "^4.4.0",