Added missing using.

Author: MiYanni

test/dotnet-workload-search.Tests/GivenDotnetWorkloadSearch.cs

@@ -3,6 +3,7 @@
 
 #nullable disable
 
+using Microsoft.Deployment.DotNet.Releases;
 using Microsoft.DotNet.Cli.NuGetPackageDownloader;
 using Microsoft.DotNet.Cli.Workload.Install.Tests;
 using Microsoft.DotNet.Workloads.Workload.Search;