Update typing

[gerlero]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.72%. Comparing base (f6bddbc) to head (f90c277).
Report is 2 commits behind head on main.

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

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #245   +/-   ##
=======================================
  Coverage   88.71%   88.72%           
=======================================
  Files          16       16           
  Lines        1258     1259    +1     
=======================================
+ Hits         1116     1117    +1     
  Misses        142      142           

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