Merge pull request #147 from akunzai/Internals-visible-to

Using the `InternalsVisibleTo` MSBuild items supported since .NET 5

Author: akunzai

src/GSS.Authorization.OAuth/GSS.Authorization.OAuth.csproj

@@ -18,9 +18,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(Configuration)' != 'Release' ">
-    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
-      <_Parameter1>$(MSBuildProjectName).Tests</_Parameter1>
-    </AssemblyAttribute>
+    <InternalsVisibleTo Include="$(MSBuildProjectName).Tests" />
   </ItemGroup>
 
-</Project>
+</Project>