Upgrade NumPy to 1.20.3, SciPy 1.6.3, networkx 2.5.1 #31008
Description
The upgrade to 1.20.x https://numpy.org/devdocs/release/1.20.0-notes.html require dropping support for Python 3.6
- 1.20.0rc1 released 2020-12-03 - https://pypi.org/project/numpy/#history
Depends on #31860
Component: packages: standard
Author: Antonio Rojas, Matthias Koeppe
Branch/Commit: 02f6848
Reviewer: Dima Pasechnik
Issue created by migration from https://trac.sagemath.org/ticket/31008