Automatic dependency update PRs should include version information

[lbussell]

We should consider adding the SDK build number to automatic dependency update PRs in this repo.

This would provide a few benefits:

• easier to evaluate the correctness of dependency flow PRs at a glance
• there won't be tons of commits in the history that all have the same commit message
• easier to trace back changes to specific .NET versions without diving into the diffs (for example, if an update needed to have a workaround added)