h5py does not correctly recognize hdf5 version on Cray (#17831)

* h5py: explicitly specify version

hdf5@1.10.5 on Cray is wrongly detected as 1.8.4.

* Update var/spack/repos/builtin/packages/py-h5py/package.py

Thanks. Also had this first, then CI was complaining about line length ...

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>