block ROCm 7.0 or newer in CMakeLists.txt

[BenWibking]

Describe the bug
ROCm 7.0 produces wrong code for the reaction networks. We need to prevent people from compiling with it similar to how we currently prevent versions < 6.3:

quokka/CMakeLists.txt

Line 64 in ae79bb4

if(hipcc_version VERSION_LESS 6.3)

To Reproduce
Reported by Mike Zingale (for Castro's reactions)

Additional context
Add any other context about the problem here.

[BenWibking]

The primordial chemistry network actually seems to work OK: AMReX-Astro/Microphysics#1869 (comment).

Apparently only the big nuclear networks fail.