re-enable pypy3 now that importlib-metadata 0.18 is released
re-enable pypy3 now that importlib-metadata 0.18 is released

tomviner/pytest,The-Compiler/pytest,alfredodeza/pytest,nicoddemus/pytest,The-Compiler/pytest,pytest-dev/pytest,Akasurde/pytest,tomviner/pytest,markshao/pytest,nicoddemus/pytest,RonnyPfannschmidt/pytest