chore(deps-dev): bump @types/react-dom from 16.9.3 to 16.9.4

Bumps [@types/react-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-dom) from 16.9.3 to 16.9.4.
- [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-lock.json

@@ -1587,9 +1587,9 @@
       }
     },
     "@types/react-dom": {
-      "version": "16.9.3",
-      "resolved": "https://registry.npmjs.org/@types/react-dom/-/react-dom-16.9.3.tgz",
-      "integrity": "sha512-FUuZKXPr9qlzUT9lhuzrZgLjH63TvNn28Ch3MvKG4B+F52zQtO8DtE0Opbncy3xaucNZM2WIPfuNTgkbKx5Brg==",
+      "version": "16.9.4",
+      "resolved": "https://registry.npmjs.org/@types/react-dom/-/react-dom-16.9.4.tgz",
+      "integrity": "sha512-fya9xteU/n90tda0s+FtN5Ym4tbgxpq/hb/Af24dvs6uYnYn+fspaxw5USlw0R8apDNwxsqumdRoCoKitckQqw==",
       "dev": true,
       "requires": {
         "@types/react": "*"

package.json

@@ -23,7 +23,7 @@
     "@types/classnames": "^2.2.9",
     "@types/d3": "^5.7.2",
     "@types/react": "^16.9.11",
-    "@types/react-dom": "^16.9.3",
+    "@types/react-dom": "^16.9.4",
     "autoprefixer": "^9.7.0",
     "babel-loader": "^8.0.6",
     "babel-preset-react-app": "^9.0.2",