test_beta_fragility_heuristic fails, probably numpy2 issue

[amdupre]

Environment: macOS Sonoma 14.5, installed via pip

ran simple "pytest tests" and

test passes on Python 3.9 with: requirements_passes.txt

test fails on Python 3.11 with: requirements_fails.txt

I think it is just line 1074 in test_stats.py, if I remove: ("mixed_returns", "simple_benchmark", 0.09),

it passes. Haven't had time to look further, though.