pandas 3 compatibility (closes #114, #115)

[ilia-kats]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.30%. Comparing base (f6699c6) to head (235deff).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #117   +/-   ##
=======================================
  Coverage   67.30%   67.30%           
=======================================
  Files          12       12           
  Lines        1918     1918           
=======================================
  Hits         1291     1291           
  Misses        627      627           

Files with missing lines	Coverage Δ
src/mudata/_core/to_.py	88.46% <100.00%> (ø)

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