Add `from-build` command to Update Dependencies tool

[lbussell]

Related:

• Redesign update-dependencies tool to better support internal builds #6305
• Consume .NET 10 builds from VMR instead of dotnet/sdk #6363

Currently Update-dependencies only lets you update to the latest BAR build ID in a channel. It should have a command that allows you to update to a specific build, regardless of channel. There are several use cases for this functionality:

• Preparing for a release of a specific version when there might be a new build in a given channel
• Applying a newer "failed" build that does not show up in a channel, but still has build artifacts
• Testing/validation using a known build

[lbussell]

[Triage] This was added in #6424