Update dependency NUnit to v4.2.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
NUnit (source)	4.1.0 -> 4.2.1

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Release Notes

nunit/nunit (NUnit)

v4.2.1

Compare Source

v4.2.0

Compare Source

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.66%. Comparing base (9946c35) to head (5aa5f7e).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #528      +/-   ##
==========================================
+ Coverage   80.16%   80.66%   +0.49%     
==========================================
  Files          51       51              
  Lines        2824     2824              
  Branches      310      310              
==========================================
+ Hits         2264     2278      +14     
+ Misses        455      441      -14     
  Partials      105      105              

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