🔧 웹훅 서버를 ES 모듈 형식으로 수정

webhook-server.js

@@ -1,6 +1,6 @@
-const express = require("express");
-const { exec } = require("child_process");
-const crypto = require("crypto");
+import express from "express";
+import { exec } from "child_process";
+import crypto from "crypto";
 
 const app = express();
 const PORT = 9000;