Bug with latest scipy

[chrisrichardson]

Latest scipy (1.14.0) seems to have removed .H for hermitian adjoint, so I am now getting:

 File "/opt/homebrew/lib/python3.11/site-packages/pyamg/aggregation/aggregation.py", line 394, in _extend_hierarchy
    R = P.H
        ^^^
AttributeError: 'bsr_matrix' object has no attribute 'H'

Maybe use .T.conj() instead of .H?

[lukeolson]

oh right -- https://docs.scipy.org/doc/scipy/release/1.14.0-notes.html#expired-deprecations

I'm surprised we didn't see the deprecation warnings from this earlier.
I'll start a fix -- there are some other issues with 1.13++ so we'll try to get this out soon.

Thank you!

[jorgensd]

We are hitting this now on our CI in DOLFINx: https://github.com/FEniCS/dolfinx/actions/runs/9665293737/job/26662040585

[lukeolson]

@jorgensd @chrisrichardson -- v5.2.1 is up on pypi now and works with the latest scipy