chore(deps-dev): bump vite from 5.4.20 to 5.4.21 in /examples/playground (#55)

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) from 5.4.20 to 5.4.21.
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v5.4.21/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v5.4.21/packages/vite)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 5.4.21
  dependency-type: direct:development
...

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Author: dependabot[bot]

examples/playground/package-lock.json

@@ -19,7 +19,7 @@
     "prettier": "^3.0.2",
     "prettier-plugin-jsdoc": "^1.0.1",
     "typescript": "^5.1.3",
-    "vite": "^5.4.20"
+    "vite": "^5.4.21"
   },
   "overrides": {
     "esbuild": "^0.18.2"