retentionDays

Duration after which artifact will expire in days.

By default artifact expires after 90 days: https://docs.github.com/en/actions/configuring-and-managing-workflows/persisting-workflow-data-using-artifacts#downloading-and-deleting-artifacts-after-a-workflow-run-is-complete

Use this option to override the default expiry.

Min value: 1 Max value: 90 unless changed by repository setting

If this is set to a greater value than the retention settings allowed, the retention on artifacts will be reduced to match the max value allowed on server, and the upload process will continue. An input of 0 assumes default retention setting.