Bump Microsoft.NET.Test.Sdk from 18.4.0 to 18.5.1 (#2078)

Author: dependabot[bot]

Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing" Version="1.1.2" />
     <PackageVersion Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="5.0.0-1.25277.114" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" />
     <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.6.2" />
     <PackageVersion Include="NSubstitute" Version="5.3.0" />