Pin h5py version

[IgorTatarnikov]

See openbraininstitute/MorphIO#35

Once resolved we can unpin.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.60%. Comparing base (48f0eee) to head (85deedb).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #440   +/-   ##
=======================================
  Coverage   86.60%   86.60%           
=======================================
  Files          27       27           
  Lines        1239     1239           
=======================================
  Hits         1073     1073           
  Misses        166      166           

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