chore(deps): update dependency vite to v8

Author: renovate[bot]

frontend/package.json

@@ -19,7 +19,7 @@
     "svelte-check": "^4.0.0",
     "tailwindcss": "^4.0.0",
     "typescript": "^5.0.0",
-    "vite": "^7.0.0"
+    "vite": "^8.0.0"
   },
   "dependencies": {
     "@xyflow/svelte": "^1.0.0",