Bump Microsoft.NET.Test.Sdk from 16.5.0 to 16.8.3

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 16.5.0 to 16.8.3.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v16.5.0...v16.8.3)

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

Author: dependabot-preview[bot]

Raptorious.SharpMt940Lib.Tests/Raptorious.SharpMt940Lib.Tests.csproj

@@ -50,7 +50,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
   </ItemGroup>
 
   <ItemGroup>