chore(deps-dev): bump jsdom in /templates/start-app

Bumps [jsdom](https://github.com/jsdom/jsdom) from 27.4.0 to 29.0.0.
- [Release notes](https://github.com/jsdom/jsdom/releases)
- [Changelog](https://github.com/jsdom/jsdom/blob/v29.0.0/Changelog.md)
- [Commits](https://github.com/jsdom/jsdom/compare/v27.4.0...v29.0.0)

---
updated-dependencies:
- dependency-name: jsdom
  dependency-version: 29.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

templates/start-app/package.json

@@ -34,7 +34,7 @@
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^5.2.0",
-    "jsdom": "^27.4.0",
+    "jsdom": "^29.0.0",
     "prettier": "^3.8.1",
     "prettier-plugin-tailwindcss": "^0.7.2",
     "typescript": "^5.9.3",