Update actions-versions-updater.yml

[Zeitsperre]

Pull Request Checklist:

• This PR addresses an already opened issue (for bug fixes / features)
  • This PR fixes #xyz
• (If applicable) Documentation has been added / updated (for bug fixes / features).
• (If applicable) Tests have been added.
• This PR does not seem to break the templates.
• CHANGES.rst has been updated (with summary of main changes).
  • Link to issue (:issue:number) and pull request (:pull:number) has been added.

What kind of change does this PR introduce?

• Changes the token used to push changes from a repository-held token to an organizational-held one

Does this PR introduce a breaking change?

No.

Other information:

This makes it so that I don't need to manage one token per repo, which is nice.