Bump Microsoft.Owin from 2.0.2 to 4.0.0 in /2015/SelfHostAndCef/SelfHostAndCef#88

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dependabot/nuget/2015/SelfHostAndCef/SelfHostAndCef/Microsoft.Owin-4.0.0Code-Inside/Samples:dependabot/nuget/2015/SelfHostAndCef/SelfHostAndCef/Microsoft.Owin-4.0.0Copy head branch name to clipboard