Tests run until they timeout if theres a failure

[Zentrik]

Not sure why this happens but if there's a test failure the testsuite seems to run for 6 hours before timing out. E.g. https://github.com/JuliaDebug/Cthulhu.jl/actions/runs/6050852363/job/16421029579, https://github.com/JuliaDebug/Cthulhu.jl/actions/runs/6050873636/job/16421100441, https://github.com/JuliaDebug/Cthulhu.jl/actions/runs/6065504195/job/16455081344