PR summary

Technically could work with older setuptools and setuptools_scm==7,
but encoding that matrix of dependencies is not something I think is worth worrying about,
and setuptools 64 is over a year old (though not by awhole lot).

setuptools_scm has a version constraint that they do not themselves enforce on the environment
so I've added it to our own requirements, when setuptools_scm is required.

Setuptools_scm's docs are inconsistent in what version theyactually require, so I went with
the one that was most up to date and was in their user facing docs.
(My next choice would be 61, as that is what the runtime warning actually checks)

The config in pyproject.toml was taken from#26621

Closes#26846

PR checklist

• "closes #0000" is in the body of the PR description tolink the related issue
• new and changed code istested
• Plotting related features are demonstrated in anexample
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• Documentation complies withgeneral anddocstring guidelines