The question that puzzled me, how to deal with the icons?

Question

HTML

Actually, the question is: when I receive layouts from the designer, he sends me icons in svg, or with the help of avocode I get them from the layout myself. But here I have a PSD layout in my hands, the author of the layout claims that the icons here are vector and I need to get them? The problem is that I practically do not use Photoshop (I have Linux) and now I don’t know how to get vector icons from it? Does this require AI or is there an easier way? Thank you.