attempt to fix wheel building logic

[jswhit]

only wheels for 3.10 and 3.11 were being built

[jswhit]

@neutrinoceros I copied this from cftime - does this look right to you?

[neutrinoceros]

Thanks for the ping; it doesn't. Building only cp310-cp310 and cp311-abi3 wheels was the intention:

• the former are still needed for Python 3.10 because Cython isn't able to generate abi3 extensions when using numpy (it really wants to use Py_Buffer, new in 3.11)
• the latter is forward compatible, so no builds are needed beyond it

[jswhit]

oh wow - I had no idea. I'll leave it as is then.