Whether or not this is a ship pic is really up to interpretation here, really. I personally don’t, but I can see why many others might see it as one. Doesn’t change the fact that this artist is amazing at what he does.
Seeing as they’re both females, the more affectionate sex, and there are parts of the world where hand-holding and the like don’t have romantic meaning, I can see it.
It actually pretty plausible that they’re this snuggly non shipping wise. They’ve known each other for how long what and their species, or atleast the show kind, is naturally cuddly. This could be like a normal gesture for them.