Bump Microsoft.NET.Test.Sdk from 17.11.0 to 17.12.0 in /src (#238)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.11.0 to 17.12.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.11.0...v17.12.0)

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

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Author: dependabot[bot]

src/AzureDevOpsPolicyConfigurator.Tests/AzureDevOpsPolicyConfigurator.Tests.csproj

@@ -10,7 +10,7 @@
     <PackageReference Include="FakeItEasy" Version="8.3.0" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" />
     <PackageReference Include="xunit" Version="2.9.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>