GitHub action with Cron job to automatically update schedule

[bebatut]

The website need to be regularly updated with information about the cohort calls during a cohort. To do the update, I currently run manually from time to time a script as explained here: https://github.com/open-life-science/open-life-science.github.io#update-schedule-for-a-cohort

It would be nice to have script running as a Cron job on GitHub action.