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

Author: renovate[bot]

Directory.Packages.props

@@ -18,7 +18,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageVersion>
     <PackageVersion Include="coverlet.collector" Version="6.0.4" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
 
     <!-- Development tools -->
     <PackageVersion Include="Nuke.Common" Version="9.0.4" />