You can move the rear dropout, check your rear wheel if it is centered between the chain stays. If it is centered, there are small screws on the brake, span the side, where it is too close. How big is the gap between the brake pad and the rim on both sides? If it less than aprx 2mm, than adjust your rear brake.

I had a Fuji D6 that had very little clearance on the rear brake with thicker aero rims, and I actually had to use slightly used brake pads (maybe 20% thickness removed?) because the stock rear brake didn’t have the ability to adjust any wider.