Can’t lazy load recaptcha version 2

Hi ABTF developers;
I’m going to optimize a website that uses google recaptcha version 2. As you may know, there’s an api.js file that dynamically generates recaptcha__en.js for each captcha on the page.
I want to defer/async this file or find a way to get rid of the errors on gtmetrix reports.
I have tested different methods with no luck. Do you have any idea for this problem? I think this should be a common issue because many websites use google captcha nowadays.

The page I need help with: [log in to see the link]