Update ef.exe TFMs

[AndriySvyryd]

For EF 10 it should target net10.0;net472

[ViktorHofer]

Alternatively, you could target $(NetMinimum) (which is an Arcade defined property that maps to the minimum supported .NETCoreApp version) which currently is net8.0: https://github.com/dotnet/arcade/blob/e7cb34898a1b610eb2a22591a2178da6f1fb7e3c/src/Microsoft.DotNet.Arcade.Sdk/tools/TargetFrameworkDefaults.props#L21

By doing that and setting a roll forward policy (RollForward=Major), the tool can be used on all supported .NETCoreApp runtimes, not just with a .NET 10 runtime installed.

[AndriySvyryd]

@ViktorHofer We decided to target $(DefaultNetCoreTargetFramework) as we don't have a strong signal that compatibility with older SDKs is needed and we want to depend on the latest Microsoft.CodeAnalysis.* to avoid conflicting transitive dependencies - #34637

[ViktorHofer]

You should be able to target the latest CodeAnalysis packages when targeting and older .NETCoreApp TFM like net8.0. Or am I missing something here?

[AndriySvyryd]

Even if they allow to target an older TFM they still require the current VS/SDK to be installed to actually work, so there's little real benefit for targeting older TFMs and it confuses users when the versioning between the TFM, SDK, Runtime and EF doesn't match