PyPy released a new version, with support for python3.9, 3.10

[mattip]

It would be nice if cibuildwheel supported the newer PyPy versions in its next release.

Also: issue #1400 to support cross-compilation for PyPy macos arm64 did not get much attention. What would be the steps to enable this?

[henryiii]

Needs pypa/manylinux#1500

[mayeut]

I opened #1525 now that pypa/manylinux#1500 has been merged.

[mattip]

cool, thanks