Bump System.Net.Http from 4.0.1-beta-23516 to 4.3.4 in /src/Nethereum.Desktop.Sample#2

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dependabot/nuget/src/Nethereum.Desktop.Sample/System.Net.Http-4.3.4PureMoney/Nethereum:dependabot/nuget/src/Nethereum.Desktop.Sample/System.Net.Http-4.3.4Copy head branch name to clipboard