[Bug]: Releasing majors/minors fails to sync version files at the end of the workflow

[JReinhold]

Describe the bug

Releasing major/minors fails at the end of the CI workflow because it tries to sync the version.json files from next-release to main - but main is already up-to-date at this point, so there's nothing to push. This is a false-negative, everything is in order, it just needs to not attempt that last sync because it has already happened with a force-push in a previous step.

Reproduction link

https://github.com/storybookjs/storybook/actions/runs/10812502523/job/29994286479

Reproduction steps

See the workflow run for the 8.3.0 release:
https://github.com/storybookjs/storybook/actions/runs/10812502523/job/29994286479