Update dependency @types/react-dom to v17

Author: renovate-bot

package-lock.json

@@ -7,7 +7,7 @@
     "@types/classnames": "2.2.11",
     "@types/highlight.js": "9.12.4",
     "@types/react": "17.0.0",
-    "@types/react-dom": "16.9.9",
+    "@types/react-dom": "17.0.0",
     "@types/react-router-dom": "5.1.6",
     "@types/react-router-hash-link": "1.2.1",
     "@types/webpack": "4.41.25",