Update version of Microsoft.Identity.Web and Microsoft.Identity.Web.UI to 2.7.0

[surayya-MS]

Update version of Microsoft.Identity.Web and Microsoft.Identity.Web.UI to 2.7.0

Fixes #47823

[wtgodbe]

If the transition across the major version is smooth, LGTM

[amcasey]

I see build failures because of ObsoleteAttribute, probably related to the major version bump. Is there a minor version that meets our needs?

[ghost]

Looks like this PR hasn't been active for some time and the codebase could have been changed in the meantime.
To make sure no breaking changes are introduced, please leave an /azp run comment here to rerun the CI pipeline and confirm success before merging the change.

[surayya-MS]

I see build failures because of ObsoleteAttribute, probably related to the major version bump. Is there a minor version that meets our needs?

@mkArtakMSFT , @halter73 should we update to the latest version (just checked it is 2.10.0) and deal with breaking changes or update to a minor version that doesn't create checks failures?

[surayya-MS]

Migration docs aka.ms/id-web-downstream-api-v2

[halter73]

@dotnet/dnceng It looks like https://www.nuget.org/packages/Microsoft.Identity.Web.DownstreamApi is not in our dotnet-public feed. How do we go about adding it?

[wtgodbe]

It looks like https://www.nuget.org/packages/Microsoft.Identity.Web.DownstreamApi is not in our dotnet-public feed. How do we go about adding it?

https://github.com/dotnet/arcade/blob/main/Documentation/MirroringPackages.md