Update opentelemetry-dotnet monorepo to v1.0.0-rc9.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
OpenTelemetry.Extensions.Hosting (source)	nuget	patch	1.0.0-rc9.5 -> 1.0.0-rc9.6
OpenTelemetry.Instrumentation.AspNetCore (source)	nuget	patch	1.0.0-rc9.5 -> 1.0.0-rc9.6

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Release Notes

open-telemetry/opentelemetry-dotnet

v1.0.0-rc9.6

Compare Source

OpenTelemetry.Instrumentation.AspNetCore

• Removed netstandard2.0 and netstandard2.1 targets. .NET 5 reached EOL
  in May 2022 and .NET Core 3.1 reaches EOL in December 2022. The
  instrumentation for ASP.NET Core now requires .NET 6 or later.
  (#​3567)

• Fixed an issue where activity started within middleware was modified by
  instrumentation library.
  (#​3498)

• Updated to use Activity native support from
  System.Diagnostics.DiagnosticSource to set activity status.
  (#​3118)
  (#​3555)

OpenTelemetry.Instrumentation.GrpcNetClient

• Updated to use Activity native support from System.Diagnostics.DiagnosticSource
  to set activity status.
  (#​3118)
  (#​3569)

OpenTelemetry.Instrumentation.Http

• Updated to use Activity native support from System.Diagnostics.DiagnosticSource
  to set activity status.
  (#​3118)
  (#​3555)

• Changed activity source name from OpenTelemetry.HttpWebRequest
  to OpenTelemetry.Instrumentation.Http.HttpWebRequest for HttpWebRequests
  and from OpenTelemetry.Instrumentation.Http
  to OpenTelemetry.Instrumentation.Http.HttpClient for HttpClient.
  (#​3515)

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