fix: migration script path

src/migrations/scripts/1617962328658-add-newsletter-data.ts

 import { Db } from 'mongodb';
 import { getDb } from '../migrations-utils/db';
 import * as fs from 'fs';
-// const fs = require('fs')
 
 export const up = async () => {
   const db: Db = await getDb();
-  fs.readFile('./src/migrations/data/newsletter-data.json', 'utf8', (err, jsonString) => {
-    if (err) {
-      console.error('File read failed:', err);
-      return;
-    }
-    const parsedData = JSON.parse(jsonString);
-    db.collection('newslettersubscriptions').insertMany(parsedData);
-  });
+  const data = fs.readFileSync('/app/src/migrations/data/newsletter-data.json', 'utf8');
+  const parsedData = JSON.parse(data);
+  db.collection('newslettersubscriptions').insertMany(parsedData);
 };
 
 export const down = async () => {