Process to update version is not correct in microsoft:release/1.0 branch

[dthaler]

Describe the bug

It's not clear to me whether the microsoft:release/1.0 branch is official or one that will be deleted. Under the assumption that it won't be deleted, this issue is specific to that branch, at least at present, so triage accordingly.

PR #4739 was just merged into microsoft:release/1.0

1. The PR description said there is no impact on documentation. docs\ReleaseProcess.md has a section entitled "Updating the Product Version" that says you just need to run .\scripts\update-product-version.ps1 X Y Z.
2. However update-product-version.ps1 was not updated and so is not aware of version.json.

Taken together, this means either the documentation is wrong or else the script is wrong. Either way, this is a regression.

OS information

No response

Steps taken to reproduce bug

Code inspection and doc inspection.

Expected behavior

Docs on updating the version should be sufficient to update the version.

Actual outcome

Following the process in the doc leaves things in a contradictory state.

Additional details

No response