WIP script to update `action.yml` with permissions based on https://github.com/octokit/app-permissions/blob/main/generated/api.github.com.json

[gr2m]

closes #3

• [ ] Fix update automation in https://github.com/octokit/app-permissions/ because it currently seems to be failing
• [ ] Install https://github.com/apps/octokit-release-notifier and configure it to create repository dispatch events for the octokit/app-permissions repository
• [ ] Setup a GitHub Actions workflow triggered by said dispatch event to update the action.yml file and create a pull request if there is any change using https://github.com/gr2m/create-or-update-pull-request-action/
• [ ] Update documentation in README.md
• [ ] Actually implement the feature 😀