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

Bumps [prettier](https://github.com/prettier/prettier) from 3.6.2 to 3.8.1.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/3.6.2...3.8.1)

---
updated-dependencies:
- dependency-name: prettier
  dependency-version: 3.8.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

templates/start-app/package.json

@@ -35,7 +35,7 @@
     "@types/react-dom": "^19.2.0",
     "@vitejs/plugin-react": "^5.0.4",
     "jsdom": "^27.0.0",
-    "prettier": "^3.5.3",
+    "prettier": "^3.8.1",
     "prettier-plugin-tailwindcss": "^0.7.2",
     "typescript": "^5.7.2",
     "vite": "^7.1.7",