How to open plain URL links in a new tab?

[Prof-Seifert]

And if you look at this (somewhat similar) question - there is also noch answer until now:

How to open shortcode links in a new tab?

So with Goldmark the standard now, opening links external links in a new tab is a bit more involved. But for my regular content I got this fixed thanks to the helpful posts here and here on the forum. But how do I get the links that a shortcode runs through markdownify to also open in a new window? Because that doesn’t invoke render-link.html so I can’t add external links that way. Anyone has an idea? Thanks!