Starting February 2nd 2023, GitHub changed the default permissions of the GITHUB_TOKEN to be read-only in all new repositories.[1]
git-auto-commits needs `write`-permissions for the `contents`-key in order to work properly.
This commits updates the usage section, to mention the need for the permission requirements. The examples have also been updated to reflect that change.
[1]: https://github.blog/changelog/2023-02-02-github-actions-updating-the-default-github_token-permissions-to-read-only/
Stefan Zweifel