fix: bump token.js to fix gemini provider base url issue

Author: louis-menlo

web-app/package.json

@@ -67,7 +67,7 @@
     "remark-math": "^6.0.0",
     "sonner": "^2.0.3",
     "tailwindcss": "^4.1.4",
-    "token.js": "npm:[email protected].14",
+    "token.js": "npm:[email protected].15",
     "tw-animate-css": "^1.2.7",
     "ulidx": "^2.4.1",
     "unified": "^11.0.5",