fix: some fixes for false-positive model validation test failures

[beckermr]

Description:

This PR fixes some false-positive model validation errors. With this PR, there are 15 errors when I last ran the tests.

Checklist:

• Pydantic model updated or no update needed

Cross-refs, links to issues, etc:

[beckermr]

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.

Project coverage is 76.99%. Comparing base (91fb8d3) to head (640d8ef).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
conda_forge_tick/make_graph.py	0.00%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3335      +/-   ##
==========================================
- Coverage   77.04%   76.99%   -0.05%     
==========================================
  Files         132      132              
  Lines       14516    14525       +9     
==========================================
  Hits        11184    11184              
- Misses       3332     3341       +9     

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[beckermr]

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