[python] Unbreak CI with anndata==0.11

[johnkerl]

Issue and/or context: As for example
https://github.com/single-cell-data/TileDB-SOMA/actions/runs/11727945417/job/32670239706?pr=3300

Note that anndata 0.11 just dropped, and I had failed to run any pre-assess checks using the RC series.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.48%. Comparing base (33b104c) to head (867ab66).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3305      +/-   ##
==========================================
+ Coverage   85.29%   85.48%   +0.18%     
==========================================
  Files          52       52              
  Lines        5517     5499      -18     
==========================================
- Hits         4706     4701       -5     
+ Misses        811      798      -13     

Flag	Coverage Δ
python	85.48% <100.00%> (+0.18%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
python_api	85.48% <90.00%> (+0.18%)	⬆️
libtiledbsoma	∅ <ø> (∅)