Update .NET SDK to 9, including dependencies · morelinq/MoreLINQ@b7503a9

Canceling since a higher priority waiting request for 'Build-1091' exists

The operation was canceled.

System.Net.Quic.MsQuicApi..cctor(): 'System.Reflection.Assembly.Location.get' always returns an empty string for assemblies embedded in a single-file app. If the path to the app directory is needed, consider calling 'System.AppContext.BaseDirectory'.