It may still work, but the reality is probably that nobody knows.

- Python 3.9.2 is the default version of Python in current Debian oldstable.
  The current Debian stable (12, Bookworm) has already 1 year (june 2023).
- CubicWeb 4.5.2 was published at the end of 2023.

We would have liked to upgrade more.
However the new minimum versions are the ones of an active project.