[bug] Instrumentation packages reference .NET 9 framework assemblies

[david-chandler-cko]

Component

OpenTelemetry.Instrumentation.AWS

Package Version

Package Name	Version
OpenTelemetry.Instrumentation.AWS	1.10.0-beta.1

Runtime Version

net8.0

Description

The common package versions have been updated for OpenTelemetry.NET and they now specify a minimum version of 9.0 for Microsoft.Extensions packages.
This means that projects targeting earlier framework versions can no longer be built using the .NET 8 SDK.

Steps to Reproduce

Try to include OpenTelemetry.Instrumentation.AWS library at version 1.10.0-beta.1 in a project targeting .net 8.

Expected Result

The library should target the extensions libraries with the same major version as the current .NET framework.

Actual Result

The library requires a reference to .NET 9 framework assemblies.

Additional Context

No response

[github-actions]

Tagging component owner(s).

@srprash @ppittle @muhammad-othman @rypdal @Oberon00

[Dreamescaper]

Using Microsoft.Extensions.Configuration 9.0.0 does not prevent from using .NET 8 SDK. net8.0 is fully supported by that package.

https://www.nuget.org/packages/microsoft.extensions.configuration/#supportedframeworks-body-tab

[ppittle]

@david-chandler-cko - can you elaborate further on your setup?

Looking at the GitHub Actions, OpenTelemetry.Instrumentation.AWS is rebuilt as part of any PR, including for .NET 8 on both windows and ubuntu, and has been succeeding as recently as today:

https://github.com/open-telemetry/opentelemetry-dotnet-contrib/actions/runs/12380042591/job/34555585408