Update the out-of-support INCLUDE file (#34154)

Author: guardrex

aspnetcore/includes/out-of-support.md

@@ -1,3 +1,2 @@
 > [!WARNING]
-> This version of ASP.NET Core is no longer supported. For more information, see [.NET and .NET Core Support Policy](https://dotnet.microsoft.com/platform/support/policy/dotnet-core). For the current release, see the [.NET 8 version of this article](?view=aspnetcore-8.0&preserve-view=true).
-
+> This version of ASP.NET Core is no longer supported. For more information, see the [.NET and .NET Core Support Policy](https://dotnet.microsoft.com/platform/support/policy/dotnet-core). For the current release, see the [.NET 9 version of this article](?view=aspnetcore-9.0&preserve-view=true).