Merge pull request #52 from linked-data-dotnet/dependabot/nuget/Microsoft.NET.Test.Sdk-16.6.1

Bump Microsoft.NET.Test.Sdk from 15.5.0 to 16.6.1

Author: asbjornu

Diff for: test/json-ld.net.tests/json-ld.net.tests.csproj

@@ -21,7 +21,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.msbuild" Version="2.8.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="xunit" Version="2.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
     <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />