Just because they changed some things, they still have to ask for permission, because the base designs are the same on every promo they did. Obviously this isn't a full-on collab, unless they say otherwise, but I'm 100% sure they asked for permission, because that's the way. They could be sued for using RG's templates.
You know what if it turns out that they didn't ask permission and this is really a slippery slope case of IP infringement and Fair Use.
This post is Exhibit A material for Rockstar lawyers: "See, somebody is already confusing that our company is in collaboration with this Kpop group. We are not a part of any of this. Please stop using materials that closely resemble our IPs and take this down immediately"
Edit: Actually, I'm pretty sure they didn't ask and hiding behind the idea of Fair Use and hoping Rockstar Games won't even bother about any of this.
Like do you think you can just phone Rockstar asking them if you can ride on their multibillion dollar brand and they will just say Yes?
It's either they say No or Yes but you need to cough up some $$$.