Update app/app.py

app/app.py

@@ -65,7 +65,7 @@ async def handle_chatwork_webhook(
 
         if room_id and from_account_id and message_id:
             # Chatwork API 엔드포인트
-            url = f"https://api.chatwork.com/v4/rooms/{room_id}/messages"
+            url = f"https://api.chatwork.com/v2/rooms/{room_id}/messages"
             
             # API 요청 헤더
             headers = {"X-ChatWorkToken": CHATWORK_API_TOKEN}