Bump Microsoft.Owin from 2.1.0 to 4.0.0 in /ProgressbarWithSignalR#3

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dependabot/nuget/ProgressbarWithSignalR/Microsoft.Owin-4.0.0CircleLin/ProgressbarWithSignalR:dependabot/nuget/ProgressbarWithSignalR/Microsoft.Owin-4.0.0Copy head branch name to clipboard