.NET: Bump Aspire.Hosting.Testing from 9.3.1 to 9.4.0#384

dependabot[bot] wants to merge 2 commits intomainmicrosoft/agent-framework:mainfrom

dependabot/nuget/dotnet/Aspire.Hosting.Testing-9.4.0microsoft/agent-framework:dependabot/nuget/dotnet/Aspire.Hosting.Testing-9.4.0Copy head branch name to clipboard