Do not use unsupported Python versions/Remove Amazon Linux 2 Support

[rafidka]

Overview

Amazon Linux 2 still comes with Python 3.7/3.8. Python 3.7 is already EOLed, and Python 3.8 will be in October 2024; see this. We don't want to allow the use of those versions, so we will have to basically remove support for Amazon Linux 2.

Acceptance Criteria

• Ensure that all Python scripts fail if Python 3.8 or earlier are used.
• It then becomes an official requirement that Python 3.9 or later is available, rendering Amazon Linux 2 unsupported.