Backport PR #39494: CI: update for numpy 1.20#39532

simonjayhawkins merged 1 commit intopandas-dev:1.2.xpandas-dev/pandas:1.2.xfrom

simonjayhawkins:backport-of-pr-39494-on-1.2.xsimonjayhawkins/pandas:backport-of-pr-39494-on-1.2.xCopy head branch name to clipboard