[3.6] bpo-36816: Update the self-signed.pythontest.net cert (GH-13192)#13198

ned-deily merged 1 commit intopython:3.6python/cpython:3.6from

gpshead:backport-6bd8173-3.6gpshead/cpython:backport-6bd8173-3.6Copy head branch name to clipboard