fix(rust): loosen bytemuck pin

[wjones127]

We were pinned to an exact version, which caused issues for users of LanceDB lancedb/lancedb#2043

✅ I've run tests with bytemuck = "=1.14.0"

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.68%. Comparing base (aae351b) to head (51f8980).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3413      +/-   ##
==========================================
- Coverage   78.69%   78.68%   -0.02%     
==========================================
  Files         250      250              
  Lines       90899    90899              
  Branches    90899    90899              
==========================================
- Hits        71532    71522      -10     
- Misses      16424    16435      +11     
+ Partials     2943     2942       -1     

Flag	Coverage Δ
unittests	78.68% <ø> (-0.02%)	⬇️

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