Incompatible with numpy>=1.24.0

[sphuber]

This is at least because of

abipy/abipy/tools/derivatives.py

Line 13 in 71d5e6c

return np.array(array, dtype=float)

As of 1.24.0 the numpy.float alias has been removed. In most cases this can be fixed by replacing the removed alias with the Python built-in. See release notes of numpy: https://numpy.org/doc/stable/release/1.20.0-notes.html#deprecations