CI: Sync branch and tag after release (#89967)
* Added `workflow_call` event to allow other workflows to invoke the "Create or update GitHub release"
* Added `dry_run` to `github-release.yml`
* Added `latest` to `release-pr.yml` which will cause the release PR to add a `release/latest` label.
* Removed unnecessary github app creation from github-release workflow and just used permissions.
(cherry picked from commit 63e715f6a9)
Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>