* 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
