Bump Microsoft.NET.Test.Sdk from 16.8.3 to 16.9.4

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 16.8.3 to 16.9.4.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](https://github.com/microsoft/vstest/compare/v16.8.3...v16.9.4)

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

MalwareMultiScan.Tests/MalwareMultiScan.Tests.csproj

@@ -11,7 +11,7 @@
         <PackageReference Include="Moq" Version="4.15.2" />
         <PackageReference Include="nunit" Version="3.12.0" />
         <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
     </ItemGroup>
 
     <ItemGroup>