Hacky fix to make mac wheels (#15019)

* Skip testing PyPy wheels

One of the test builds on #15015 failed to install a pp38-* wheel
because it didn't have access to the openssl headers to build
`cryptography` from source. We don't run CI against PyPy so I'm going to
be a meanie and skip testing the wheels. (And I've no idea why 3.8 was
special in the first place, either.)

* Hack the name of the wheel so cibw can test it

I hate hate hate hate hate hate hate hate hate this

* Changelog

* Apply suggestions from code review

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

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Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>