build(deps-dev): bump vite from 5.4.10 to 5.4.21 in /easytier-web/frontend-lib (#1922)

* build(deps-dev): bump vite in /easytier-web/frontend-lib

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) from 5.4.10 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
...

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

easytier-web/frontend-lib/package.json

@@ -41,7 +41,7 @@
     "postcss-nested": "^7.0.2",
     "tailwindcss": "=3.4.17",
     "typescript": "~5.6.3",
-    "vite": "^5.4.10",
+    "vite": "^5.4.21",
     "vite-plugin-dts": "^4.3.0",
     "vue-tsc": "^2.1.10"
   },