chore(deps-dev): bump @types/node in /ui in the dev-dependencies group

Bumps the dev-dependencies group in /ui with 1 update: [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node).


Updates `@types/node` from 25.3.3 to 25.9.0
- [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-version: 25.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

ui/package.json

@@ -10,7 +10,7 @@
   },
   "devDependencies": {
     "etherpad-webcomponents": "^0.0.11",
-    "@types/node": "^25.8.0",
+    "@types/node": "^25.9.0",
     "esbuild": "0.28.0",
     "typescript": "^6.0.3",
     "vite": "^8.0.13"