Expired deprecation in scipy-1.14 results in broken CameraGeometry

[mexanick]

Following the recent release of scipy(https://github.com/scipy/scipy/releases/tag/v1.14.0),
the CameraGeometry is now broken:

self = CameraGeometry(name='LSTCam', pix_type=PixelShape.HEXAGON, npix=1855, cam_rot=-0.000 deg, pix_rot=0.857 rad, frame=<TelescopeFrame Frame (telescope_pointing=None, obstime=None, location=None)>)
    @lazyproperty
    def neighbor_matrix(self):
>       return self.neighbor_matrix_sparse.A
E       AttributeError: 'csr_matrix' object has no attribute 'A'

It is an expired deprecation, see:
scipy/scipy#21049

As a result, we need either to promote this issue to a bug (and fix it), or pin the scipy version to be ~1.13

[mexanick]

I guess, a fix could be simply to use csr_matrix.toarray() instead of csr_matrix.A
https://docs.scipy.org/doc/scipy-1.12.0/reference/generated/scipy.sparse.csr_matrix.toarray.html

[maxnoe]

@mexanick Yes, exactly, done here: #2569