Bump Microsoft.NET.Test.Sdk from 18.6.0 to 18.7.0

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -17,7 +17,7 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" Pinned="true" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0" Pinned="true" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.9" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
     <PackageVersion Include="NUnit" Version="4.6.1" />
     <PackageVersion Include="MSTest" Version="4.2.3" />
     <PackageVersion Include="MSTest.TestFramework" Version="4.2.3" />