ASP.NET Core updates in .NET 9 Release Candidate 1

[danroth27]

Here's a summary of what's new in ASP.NET Core in this release:

• Improvements to SignalR distributed tracing
• Keep-alive timeout for WebSockets
• Keyed DI in middleware
• Override InputNumber type attribute
• Trust the ASP.NET Core HTTPS development certificate on Linux

ASP.NET Core updates in .NET 9 Release Candidate 1:

• Release notes
• What's new in ASP.NET Core in .NET 9 documentation.
• Breaking changes
• Roadmap

.NET 9 Release Candidate 1:

• Discussion
• Release notes