Mahalanobis detector is incompatible with scipy > 1.13

[sfo]

Since scipy version 1.14.0, the scipy.linalg.eigh method does no longer accept the eigvals parameter (it's been marked as deprecated since 1.5.0), which is used here: https://github.com/SeldonIO/alibi-detect/blob/ecb3bcc59d429bc978bac32380bcc47aa21aa239/alibi_detect/od/mahalanobis.py#L272

The solution is also given in the deprecation note:

[...] use subset_by_index keyword instead. [...]

I fear that I cannot oversee the implications and consequences of this change, so I will avoid submitting a pull request for the time being.