Ensure TestContext.CancellationToken is used

[rosenbjerg]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 83.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.67%. Comparing base (1c4333e) to head (9078639).
⚠️ Report is 143 commits behind head on main.

Files with missing lines	Patch %	Lines
FFMpegCore/FFMpeg/FFMpegArgumentProcessor.cs	83.33%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #587      +/-   ##
==========================================
- Coverage   71.20%   68.67%   -2.53%     
==========================================
  Files         117      122       +5     
  Lines        2973     3477     +504     
  Branches      284      309      +25     
==========================================
+ Hits         2117     2388     +271     
- Misses        751      974     +223     
- Partials      105      115      +10     

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