`run_CycleFold` on windows sometimes returns exitstatus != 0

[marcom]

Example: https://github.com/marcom/RNAstructure.jl/actions/runs/5320855306/jobs/9635178575

run_CycleFold: Test Failed at D:\a\RNAstructure.jl\RNAstructure.jl\test\RNAstructure.jl:473
  Expression: ps == 0
   Evaluated: 3221225477 == 0

• investigate for which inputs this happens, check if upstream issue

• re-enable windows CI testing, perhaps by just marking this test as broken on windows