Update dependency Microsoft.NET.Test.Sdk to v16.8.0 (#85)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

System.IO.Abstractions.Analyzers.Tests/System.IO.Abstractions.Analyzers.Tests.csproj

@@ -7,7 +7,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.0" />
 		<PackageReference Include="System.IO.Abstractions" Version="12.2.19" />
 		<PackageReference Include="xunit" Version="2.4.1" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />