[LyX/ next] Prepare the removal of Python 2 support

[Pavel Sanda]

On Thu, May 30, 2024 at 04:58:30PM +0100, José Matos wrote:
> There is another change that deserves to be discussed, in the process I
> have bumped the minimum python version to be 3.10.

The research which should be done is to pair aprox. versions
of Qt, gcc & python in some still alive oold LTS ubuntu/redhat + 2.5 years.
It does not make sense to invest time for supporting old gcc when
the rest won't work anyway.

I did not do this research yet, but the quick check on my terminal
showed 3.9.2 and I'm not even running old LTS, so my first guess is
that you are trying to bump too much...

Pavel