update

Author: isamu

functions/package.json

@@ -15,7 +15,7 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "express": "^4.21.2",
+    "express": "^5.1.0",
     "firebase-admin": "^13.2.0",
     "firebase-functions": "^6.3.2",
     "hono": "^4.6.17"