vulnerabilyties fixed

src/mail/mail.controller.ts

@@ -36,7 +36,7 @@ export class MailController {
     const emails=this.excelService.readEmailsFromExcel('./src/excel_Usuarios/usuarios_fake.xlsx');
     let fechaActual: Date = new Date();
     
-    for (const email of emails) {
+    for (const email of await emails) {
       try {
         await this.mailService.sendMail(email, "subject", "text", fechaActual);
         console.log(`📧 Enviado a: ${email}`);