Follow up of https://github.com/cli/cli/pull/7612
The `missingWorkflowScopeRE` is defined to capture
the error message when the `GH_TOKEN` does not have
`workflow` scope in `gh repo sync <remote>`,
but this is only intended for error messages for
OAuth Apps and does not work with GitHub Apps.
In GitHub App, you will get the following error:
```
{
"message": "refusing to allow a GitHub App to create or update workflow `.github/workflows/teamcity-pr-checks.yml` without `workflows` permission",
"documentation_url": "https://docs.github.com/rest/branches/branches#sync-a-fork-branch-with-the-upstream-repository",
"status": "422"
}
```
As you can see above, the existing regexp does not
match the "`workflows` permission".
This change modifies the regexp to return
the user-friendly error message when the `workflow`
permission is missing, even in the case of a GitHub App.
b01288617a