Update dependency NSubstitute to v5.1.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
NSubstitute	nuget	minor	5.0.0 -> 5.1.0

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Configuration

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[codecov]

Codecov Report

Merging #1016 (865d6d0) into master (d6157dc) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1016      +/-   ##
==========================================
- Coverage   69.72%   69.70%   -0.02%     
==========================================
  Files         493      493              
  Lines       20066    20066              
  Branches     1603     1603              
==========================================
- Hits        13991    13988       -3     
- Misses       6075     6078       +3     

see 2 files with indirect coverage changes