Your iconography should support Bold Text too. One way of doing it is by creating custom symbols (and specifying weights for it) to work with them as you would with regular SF Symbols.

How Creating custom symbols: https://developer.apple.com/videos/play/wwdc2021/10250/

A coffee cup within a circle icon in three different weights. Creating custom symbols with weights would make it so your iconography supports the Bold Text feature. You can create a custom symbol image using an asset in an asset catalog in Xcode and load it using the UIImage initialiser and passing the name as an attribute.