Describe the bug 🐞

Looks like the new ReactiveUI.Testing packages do not contain net6.0+ TFMs only net462, net472, net8.0-windows, net9.0-windows and net10.0-windows. Screenshot from NuGet.org:

So now when I restore packages on my xUnit Unit Test project I get the following warning:

Restore succeeded with 1 warning(s) in 5.8s
    /Users/tomaszcielecki/git/DrivingRangeApp/Tests/UnitTests/UnitTests.csproj : warning NU1701: Package 'ReactiveUI.Testing 22.0.1' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8, .NETFramework,Version=v4.8.1' instead of the project target framework 'net9.0'. This package may not be fully compatible with your project.

Step to reproduce

1. Add reference to ReactiveUI.Testing version 22.0.1 in a Unit Test library targeting net9.0
2. Restore packages

Expected behavior

I would have expected plain net8.0, net9.0 targets in the package too and not generate a warning when restoring packages on my Unit Test project.

Screenshots 🖼️

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IDE

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Operating system

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Version

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Device

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ReactiveUI Version

22.0.1

Additional information ℹ️

No response