Bump Microsoft.Owin from 3.1.0 to 4.0.0 in /oscova-pizza-bot/PizzaBot#8

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dependabot/nuget/oscova-pizza-bot/PizzaBot/Microsoft.Owin-4.0.0SynHub/syn-bot-samples:dependabot/nuget/oscova-pizza-bot/PizzaBot/Microsoft.Owin-4.0.0Copy head branch name to clipboard