Bump System.Net.Http from 4.3.0 to 4.3.4#16

dependabot[bot] wants to merge 1 commit intomaintemporalio/edu-102-dotnet-code:mainfrom

dependabot/nuget/exercises/testing-code/solution/Tests/System.Net.Http-4.3.4temporalio/edu-102-dotnet-code:dependabot/nuget/exercises/testing-code/solution/Tests/System.Net.Http-4.3.4Copy head branch name to clipboard