chore!: update the default image via Renovate

[kayman-mk]

Description

So far the AMI id was calculated on every terraform apply and changed frequently whenever a new AMI was published. This is against the concept of immutable infrastructure. The AMI should not change automatically.

This PR enables Renovate to update the AMI via PR.

Migrations required

The var.ami_name_filter is removed. The AMI id is set internally or can be provided with var.ami_id if you want to use (and update) your own AMI

Checklist

• [x] My code follows the style guidelines of the project
• [x] I have performed a self-review of my own code

[github-actions[bot]]

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[kayman-mk]

Workflows fixed. Something went wrong with #337