build(deps-dev): bump vite from 6.4.1 to 6.4.2 in /frontend

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>

Author: dependabot[bot]

frontend/package.json

@@ -46,7 +46,7 @@
     "stylelint-config-standard": "^40.0.0",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.58.0",
-    "vite": "^6.4.1",
+    "vite": "^6.4.2",
     "vitest": "^3.2.4"
   }
 }