Update serialization

[gerlero]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 86.04%. Comparing base (45274a6) to head (1f857b5).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
foamlib/_files/_serialization.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #263      +/-   ##
==========================================
- Coverage   86.10%   86.04%   -0.06%     
==========================================
  Files          16       16              
  Lines        1360     1362       +2     
==========================================
+ Hits         1171     1172       +1     
- Misses        189      190       +1     

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