Replace AuthenticodeTools with Microsoft.Security.Extensions

[caesay]

Closes #395

[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.

Project coverage is 40.18%. Comparing base (da27736) to head (02e1e09).
Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/vpk/Velopack.Packaging.Windows/CodeSign.cs	71.42%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #435      +/-   ##
===========================================
+ Coverage    40.17%   40.18%   +0.01%     
===========================================
  Files          222      222              
  Lines        16213    16217       +4     
  Branches      1957     1957              
===========================================
+ Hits          6513     6517       +4     
  Misses        9366     9366              
  Partials       334      334              

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