Bump vite from 6.4.1 to 6.4.2 in /installer-gui

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) from 6.4.1 to 6.4.2.
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v6.4.2/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v6.4.2/packages/vite)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 6.4.2
  dependency-type: direct:development
...

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

installer-gui/package.json

@@ -37,6 +37,6 @@
         "svelte-check": "^4.0.0",
         "typescript": "~5.6.2",
         "typescript-eslint": "^8.46.2",
-        "vite": "^6.0.3"
+        "vite": "^6.4.2"
     }
 }