Given how widespread PY310's usage has become, and how we're just a
few months away from PY311 major release. This is a slightly late
bumping but necessary to ensure smoother updates & maintenance for
Frappe, ERPNext & other apps in the coming years. Almost all people
who participated in the pool from the community as well as Frappe team
voted (via active telegram groups) PY310 as their preferred minimum
requirement for v14.
* Bumping iPython by a minor version broke 3.6 installs for us via https://github.com/frappe/frappe/pull/14192
* We could just add another line in requirements.txt to solve this, but
since PY36 is reaching end of life by end of this year and release of
3.10 is just around the corner, might as well just drop it now than
later
* Frappe v14 would probably have the support range of 3.7-3.10/11 given
when we release it. Maintaining dependencies for such a large range
can become cumbersome
