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

Author: renovate[bot]

Directory.Packages.props

@@ -13,7 +13,7 @@
     <PackageVersion Include="NSubstitute.Analyzers.CSharp" Version="1.0.17" />
     <PackageVersion Include="FluentAssertions" Version="8.6.0" />
     <PackageVersion Include="FluentAssertions.Analyzers" Version="0.34.1" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.4" />
     <PackageVersion Include="coverlet.collector" Version="6.0.4" />