Bump Microsoft.NET.Test.Sdk in /tests/NHapi.Base.NUnit

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.3.2 to 17.4.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v17.3.2...v17.4.0)

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

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

Author: dependabot[bot]

tests/NHapi.Base.NUnit/NHapi.Base.NUnit.csproj

@@ -18,7 +18,7 @@
   <ItemGroup>
     <PackageReference Include="NUnit" Version="3.13.3" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.3.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
     <PackageReference Include="TimeZoneConverter" Version="6.0.1" />
 
     <PackageReference Include="coverlet.collector" Version="3.2.0">