Update Microsoft.NET.Test.Sdk to 17.8.0.

Author: bgrainger

Directory.Packages.props

@@ -14,7 +14,7 @@
     <PackageVersion Include="Microsoft.Extensions.Configuration.Json" Version="7.0.0" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="7.0.0" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.1" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageVersion Include="MySql.Data" Version="8.2.0" />
     <PackageVersion Include="NLog" Version="4.5.0" />
     <PackageVersion Include="Serilog" Version="2.6.0" />