chore(deps-dev): bump @types/react-dom from 16.9.8 to 16.9.9

Bumps [@types/react-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-dom) from 16.9.8 to 16.9.9.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-dom)

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

package.json

@@ -49,7 +49,7 @@
     "@types/classnames": "^2.2.11",
     "@types/d3": "^5.16.3",
     "@types/react": "^16.9.53",
-    "@types/react-dom": "^16.9.8",
+    "@types/react-dom": "^16.9.9",
     "autoprefixer": "^9.8.6",
     "babel-preset-react-app": "^9.1.2",
     "cypress": "^5.4.0",