[fix] DeprecationWarning: Calling promisify on a function that returns a Promise is likely a mistake.

[ereator]

Describe the bug

Node.js version: 23.2.0

OS version: Windows 10 Pro 22H2 19045.5131

Description:
After updating the latest Node, Express and Mail template versions, the error appeared.
Once sending an email the Node.js server throws:
(node:13892) [DEP0174] DeprecationWarning: Calling promisify on a function that returns a Promise is likely a mistake.
at node:internal/util:454:17
at new Promise ()
at node:internal/util:439:12
at Email.render (D:\Projects\uvvo\node_modules\email-templates\index.js:254:47)
at async Promise.all (index 1)
at async Email.renderAll (D:\Projects\uvvo\node_modules\email-templates\index.js:268:37)
at async Email.send (D:\Projects\uvvo\node_modules\email-templates\index.js:338:20)

Actual behavior

Throws the DeprecationWarning

Expected behavior

Do not throw the DeprecationWarning

Code to reproduce

const transporter = require('../config/transporter');
const Email = require('email-templates');

const email = new Email({
    message: {from: '"Uvvo" <noreply@uvvo.eu>'},
    send: true,
    preview: false,
    juice: true,
    juiceResources: { 
        applyStyleTags: true,
        removeStyleTags: true
    },
    transport: transporter //{jsonTransport: true }
});

async function sendReminder(crm, template, date, notistatus, logMessage) {
    if (crm.user.onNews) {
        mailer.send({
            template,
            message: { to: crm.user.email },
            locals: {
                name: crm.user.first_name,
                email: encrypt(crm.user.email),
                uid:  crm.user._id
            }
        }).catch((err) => {
            console.error('Error sending email:', err);
        });
    }

    crm.notistatus = notistatus;
    crm.comment += `📧 **${date}:** ${logMessage}`;
    console.log(`notify ${notistatus}: `, crm.user.email);
}

Checklist

• I have searched through GitHub issues for similar issues.
• I have completely read through the README and documentation.
• I have tested my code with the latest version of Node.js and this package and confirmed it is still not working.