chore(deps): update dependency microsoft.net.test.sdk to v18

Author: renovate-bot

Directory.Packages.props

@@ -56,7 +56,7 @@
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="9.0.6" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="9.0.6" />
     <PackageVersion Include="Microsoft.Extensions.Http" Version="9.0.6" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
     <PackageVersion Include="Microsoft.VSSDK.BuildTools" Version="17.14.2120" />
     <PackageVersion Include="Moq" Version="4.20.72" />