scipy.optimize DeprecationWarning: The `disp` and `iprint` options of the L-BFGS-B solver are deprecated and will be removed in SciPy 1.18.0.

[thehrh]

To be ready for the next minor SciPy release, these options therefore need to be removed from these test settings and our default-setting function.

See e.g. https://docs.scipy.org/doc/scipy-1.17.0/reference/optimize.minimize-lbfgsb.html for the removal announcement.