Bump MediaBrowser.Server.Core from 4.6.0.50 to 4.9.1.90#3

dependabot[bot] wants to merge 1 commit intomasterMediaBrowser/TuneIn:masterfrom

dependabot/nuget/MediaBrowser.Plugins.TuneIn/MediaBrowser.Server.Core-4.9.1.90MediaBrowser/TuneIn:dependabot/nuget/MediaBrowser.Plugins.TuneIn/MediaBrowser.Server.Core-4.9.1.90Copy head branch name to clipboard