MFH: r553448
devel/pycharm-pro: update to 2020.2.3
Change log: https://confluence.jetbrains.com/display/PYH/PyCharm+2020.2.3+Release+Notes
PR: 250392
Submitted by: Guido Kollerie <guido@kollerie.com> (maintainer)
Approved by: ports-secteam (riggs)