Bump @types/react-dom from 16.9.6 to 16.9.8

Bumps [@types/react-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-dom) from 16.9.6 to 16.9.8.
- [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] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -48,7 +48,7 @@
     "@types/node": "^13.13.0",
     "@types/qs": "^6.9.3",
     "@types/react": "^16.9.34",
-    "@types/react-dom": "^16.9.6",
+    "@types/react-dom": "^16.9.8",
     "@types/react-router-dom": "^5.1.5",
     "@types/socket.io-client": "^1.4.33"
   }