build(deps): bump the dotnet group in /src with 1 update

Bumps the dotnet group in /src with 1 update: [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest).

- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.6.3...v17.7.0)

---
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] <support@github.com>

src/Directory.build.props

@@ -48,7 +48,7 @@
   </PropertyGroup>
 
   <ItemGroup Condition="$(IsTestProject) or $(MSBuildProjectName.Contains('TestRunner'))">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.3" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.0" />
     <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="Xunit.StaFact" Version="1.1.11" />
     <PackageReference Include="FluentAssertions" Version="6.11.0" />