chore(deps): update dependency openai to v6

Author: renovate[bot]

package-lock.json

@@ -58,7 +58,7 @@
   "devDependencies": {
     "jest": "^30.0.0",
     "node-fetch": "^3.3.2",
-    "openai": "^4.52.4",
+    "openai": "^6.0.0",
     "prettier": "^3.0.0",
     "vite": "^7.0.0"
   },