feat: add AMI update and fix schedule

[kayman-mk]

Description

• adds update of AMI images
• uses Cron syntax for schedule as Later is deprecated
• reduces updates to workflows to once a month to reduce the overall number of PRs. But updates to this repository are done frequently to have the newest version available.

Verification

Not done.

[github-actions]

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[kayman-mk]

Seems that the Json check does not work for Json5 files.

Edit: addressed in Hapag-Lloyd/Workflow-Templates#148