chore(deps): update dependency @types/react-dom to v16.9.6

| datasource | package          | from   | to     |
| ---------- | ---------------- | ------ | ------ |
| npm        | @types/react-dom | 16.9.5 | 16.9.6 |

Author: renovate-bot

package.json

@@ -23,7 +23,7 @@
     "@istanbuljs/nyc-config-typescript": "0.1.3",
     "@testing-library/cypress": "5.3.1",
     "@types/react": "16.9.31",
-    "@types/react-dom": "16.9.5",
+    "@types/react-dom": "16.9.6",
     "babel-loader": "8.1.0",
     "babel-plugin-istanbul": "5.2.0",
     "babel-plugin-styled-components": "1.10.7",