Bump System.Net.Http.WinHttpHandler from 6.0.0 to 9.0.15#1037

dependabot[bot] wants to merge 1 commit intomainmicrosoftgraph/msgraph-sdk-dotnet-core:mainfrom

dependabot/nuget/src/Microsoft.Graph.Core/System.Net.Http.WinHttpHandler-9.0.15microsoftgraph/msgraph-sdk-dotnet-core:dependabot/nuget/src/Microsoft.Graph.Core/System.Net.Http.WinHttpHandler-9.0.15Copy head branch name to clipboard