Updating OnnxRuntime

[ericstj]

Attempting to update just OnnxRuntime to see if that repros the issue seen in #7457

[Copilot]

Pull Request Overview

This PR updates the MicrosoftMLOnnxRuntime version from 1.18.1 to 1.21.0 in an effort to reproduce the issue noted in the referenced pull request.

• Updated OnnxRuntime version in Versions.props for testing compatibility.

[ericstj]

Yeah, here's a customer report microsoft/onnxruntime#24579

[ericstj]

Confirmed this is the cause of the problem. Blocked on microsoft/onnxruntime#24579

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.99%. Comparing base (b17e794) to head (e8dc311).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7469      +/-   ##
==========================================
- Coverage   69.00%   68.99%   -0.01%     
==========================================
  Files        1482     1482              
  Lines      273880   273880              
  Branches    28254    28254              
==========================================
- Hits       188983   188961      -22     
- Misses      77514    77533      +19     
- Partials     7383     7386       +3     

Flag	Coverage Δ
Debug	68.99% <ø> (-0.01%)	⬇️
production	63.28% <ø> (-0.01%)	⬇️
test	89.46% <ø> (-0.01%)	⬇️

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see 5 files with indirect coverage changes

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