chore(deps): update .net test stack (#432)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Directory.Packages.props

@@ -25,15 +25,15 @@
     <PackageVersion Include="Avalonia.Diagnostics" Version="11.3.16" />
     <PackageVersion Include="Avalonia.Desktop" Version="12.0.3" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Debug" Version="10.0.8" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
     <PackageVersion Include="System.Formats.Asn1" Version="10.0.8" />
     <PackageVersion Include="PublicApiGenerator" Version="11.5.4" />
     <PackageVersion Include="Splat" Version="19.3.1" />
     <PackageVersion Include="ReactiveUI" Version="23.2.27" />
     <PackageVersion Include="ReactiveUI.Maui" Version="23.2.27" />
     <PackageVersion Include="System.Reactive" Version="6.1.0" />
     <PackageVersion Include="TUnit" Version="1.45.29" />
-    <PackageVersion Include="Verify.TUnit" Version="31.17.0" />
+    <PackageVersion Include="Verify.TUnit" Version="31.18.0" />
     <PackageVersion Include="Verify.SourceGenerators" Version="2.5.0" />
   </ItemGroup>
 </Project>