chore(deps): update dependency @vitejs/plugin-vue to v6

Author: renovate[bot]

frontend/package.json

@@ -27,7 +27,7 @@
     "@tsconfig/node20": "^20.1.4",
     "@types/google-protobuf": "^3.15.12",
     "@types/node": "^22.15.30",
-    "@vitejs/plugin-vue": "^5.2.1",
+    "@vitejs/plugin-vue": "^6.0.0",
     "@vue/eslint-config-typescript": "^14.5.0",
     "@vue/tsconfig": "^0.7.0",
     "eslint": "^9.28.0",