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Better support for HTTP/2 in SignalR .NET client (#42817)
Propagate trace parent to SignalR hub invocations (#57049)
Use file scoped namespaces (#38076)
Add rule to seal internal and private types (#41457)
Rename Microsoft.Aspnetcore.Testing to Microsoft.AspNetCore.InternalTesting (#51713)
Resolve CA2201: No Reserved Exceptions (#47873)