Bump Microsoft.NET.Test.Sdk from 16.2.0 to 16.4.0

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 16.2.0 to 16.4.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v16.2.0...v16.4.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

System.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj

@@ -41,7 +41,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' != 'net40'">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
     <PackageReference Include="Moq" Version="4.13.1" />
   </ItemGroup>