fix: fix key again

[tlambert03]

No description provided.

[tlambert03]

3.10 is failing for now due to pydantic/pydantic-settings#390

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 11 lines in your changes missing coverage. Please review.

Project coverage is 84.55%. Comparing base (2c05362) to head (bdb709c).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/microsim/cosem/_client.py	66.66%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #77      +/-   ##
==========================================
+ Coverage   84.19%   84.55%   +0.35%     
==========================================
  Files          49       47       -2     
  Lines        2892     3121     +229     
==========================================
+ Hits         2435     2639     +204     
- Misses        457      482      +25     

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