Bump Microsoft.TestPlatform.TestHost from 17.0.0 to 17.12.0

Bumps [Microsoft.TestPlatform.TestHost](https://github.com/microsoft/vstest) from 17.0.0 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@v17.0.0...v17.12.0)

---
updated-dependencies:
- dependency-name: Microsoft.TestPlatform.TestHost
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Auth/LearningHub.Nhs.Auth.Tests/LearningHub.Nhs.Auth.Tests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="elfhHub.Nhs.Models" Version="3.0.8" />
     <PackageReference Include="LearningHub.Nhs.Models" Version="3.0.33" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
-    <PackageReference Include="Microsoft.TestPlatform.TestHost" Version="17.0.0" />
+    <PackageReference Include="Microsoft.TestPlatform.TestHost" Version="17.12.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118">
       <PrivateAssets>all</PrivateAssets>