merge py3.8 into release

--HG--
branch : release-pypy3.8-v7.x
2 jobs for release-pypy3.8-v7.3.6rc2 in 29 minutes and 11 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Test
passed check_rpython_annotations #251457

00:07:25

passed hpy_tests #251458

00:29:11