Bump Microsoft.NET.Test.Sdk

Bumps the dotnet group in /docs/core/tutorials/snippets/library-with-visual-studio-6-0/csharp/StringLibraryTest with 1 update: [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest).


Updates `Microsoft.NET.Test.Sdk` from 17.10.0 to 17.11.0
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.10.0...v17.11.0)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <[email protected]>

docs/core/tutorials/snippets/library-with-visual-studio-6-0/csharp/StringLibraryTest/StringLibraryTest.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.5.2" />
     <PackageReference Include="MSTest.TestFramework" Version="3.5.2" />
     <PackageReference Include="coverlet.collector" Version="6.0.2" />