Bump Microsoft.TestPlatform.ObjectModel from 17.3.2 to 17.4.0

Bumps [Microsoft.TestPlatform.ObjectModel](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.TestPlatform.ObjectModel
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

test/Spring.Extensions.DependencyInjection.Tests/Spring.Extensions.DependencyInjection.Tests.csproj

@@ -21,7 +21,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="$(TargetFramework.StartsWith('net4')) AND '$(OS)' != 'Windows_NT' ">
-    <PackageReference Include="Microsoft.TestPlatform.ObjectModel" Version="17.3.2"/>
+    <PackageReference Include="Microsoft.TestPlatform.ObjectModel" Version="17.4.0"/>
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" PrivateAssets="All"/>
   </ItemGroup>