Bump @types/node from 12.20.55 to 20.5.9 in /website

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 12.20.55 to 20.5.9.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

website/package.json

@@ -66,7 +66,7 @@
   "devDependencies": {
     "@types/classnames": "^2.2.8",
     "@types/history": "^4.7.2",
-    "@types/node": "^12.0.10",
+    "@types/node": "^20.5.9",
     "@types/reach__router": "^1.2.4",
     "@types/react": "^16.8.22",
     "@types/react-dom": "^16.8.4",