Update NuGet packages

[StefH]

No description provided.

[codecov]

Codecov Report

Merging #728 (a37455e) into master (be070af) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #728   +/-   ##
=======================================
  Coverage   75.72%   75.72%           
=======================================
  Files         175      175           
  Lines        6340     6340           
  Branches      646      646           
=======================================
  Hits         4801     4801           
  Misses       1346     1346           
  Partials      193      193           

Impacted Files	Coverage Δ
src/WireMock.Net/Http/HttpClientBuilder.cs	72.41% <ø> (ø)
...rc/WireMock.Net/Owin/AspNetCoreSelfHost.NETCore.cs	100.00% <ø> (ø)
src/WireMock.Net/Server/WireMockServer.Admin.cs	58.78% <ø> (ø)
....Matchers.CSharpCode/Matchers/CSharpCodeMatcher.cs	83.33% <100.00%> (ø)
src/WireMock.Net/Owin/AspNetCoreSelfHost.cs	87.23% <100.00%> (ø)

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