Bump System.Net.Http from 4.3.0 to 4.3.4 in /Samples/Stylet.Samples.ModelValidation#243

dependabot[bot] wants to merge 1 commit intomastercanton7/Stylet:masterfrom

dependabot/nuget/Samples/Stylet.Samples.ModelValidation/System.Net.Http-4.3.4canton7/Stylet:dependabot/nuget/Samples/Stylet.Samples.ModelValidation/System.Net.Http-4.3.4Copy head branch name to clipboard