Bump setuptools version on mac

[cailafinn]

Description of work

Purpose of work
We don't think there's an ARM version of 47.0 on mac. So it's making the pull-requests build fall over.

Summary of work
Update this with the same version as we're using for the mac packages as the Visual studio issue that was the reason for keeping to 47 isn't a problem on macOS.

To test:

1. Does it build?

There is no associated issue.

This does not require release notes because dev only

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[MialLewis]

Superseded by #35832