Bump Microsoft.NET.Test.Sdk from 17.5.0 to 17.6.3

Author: batzen

Directory.packages.props

@@ -9,7 +9,7 @@
     </ItemGroup>
 
     <ItemGroup Label="Test">
-        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
+        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.6.3" />
         <PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
 
         <PackageVersion Include="NUnit" version="3.13.3" />