Upgrade node version

[pdl]

Starting Friday, January 31st, 2025, Node.js 16 will no longer be supported on Vercel. Please upgrade as soon as possible to keep receiving security updates and prevent any errors.

To upgrade:

Update engines in package.json to "22.x" or the General page in your Vercel Project Settings.

Create a new deployment for the changes to take effect.

In many cases, you will need to update dependencies in package.json as well.

NB: We should check both the app and the website.