Deps: constrain phonopy and spglib versions

[bastonero]

Tests fail with recent versions of phonopy and spglib.
From spglib v2.5, some API and functionality have changed,
and phonopy seems to not be functioning as expected
since v2.26 onwards.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.30%. Comparing base (3ee9e7c) to head (0daaa4c).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #76      +/-   ##
==========================================
- Coverage   87.44%   87.30%   -0.15%     
==========================================
  Files          26       24       -2     
  Lines        2286     2260      -26     
==========================================
- Hits         1999     1973      -26     
  Misses        287      287              

Flag	Coverage Δ
pytests	87.30% <ø> (-0.15%)	⬇️

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