python 3.12 not supported because imp is deprecated

[fgvieira]

Describe the bug

python 3.12 is not supported.

To Reproduce

Steps to reproduce the behavior:

1. Run megaqc with command: initdb
2. See error

[...]
    import imp
ModuleNotFoundError: No module named 'imp'

and, according to this post, imp has be deprecated. Indeed, all works fine if I install using python 3.11.

Expected behavior

A initialized DB.