Bump vite from 5.4.18 to 5.4.20 in /frontend

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) from 5.4.18 to 5.4.20.
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v5.4.20/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v5.4.20/packages/vite)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 5.4.20
  dependency-type: direct:development
...

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

Author: dependabot[bot]

frontend/package.json

@@ -128,7 +128,7 @@
 		"tailwindcss": "^3.4.17",
 		"typescript": "^5.8.3",
 		"typescript-eslint": "^8.32.1",
-		"vite": "^5.4.18",
+		"vite": "^5.4.20",
 		"vite-plugin-mkcert": "^1.17.8",
 		"vite-plugin-monaco-editor": "^1.1.0",
 		"vite-plugin-pwa": "^0.20.5",