[BREAKING] cdxgen container image 10.6.x would use Python 3.12 via almalinux 9.4

[prabhu]

We observed that many real-world python applications do not build correctly with Python 3.12. On the other hand, new versions of atom and chen requires 3.12 to support new use cases and languages.

We will make the Python version configurable via build args, so users requiring an older version could build and maintain their own images.

[prabhu]

We're already on 3.12 from 10.5.1 onwards. Looks like no one is complaining.