New review comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/39818#discussion_r999527617

Comment:
It's not a Python issue; the cargo failure is the same as affects some other templates. I just grepped for "indexmap" in `srcpkgs/*/template` and found several that updated `autocfg`. The other changes I made just bring the template in line with other packages that use `python3-setuptools-rust`.

I'm rolling this into the pending Py3.11 update just to keep conflicts down; if there's a pressing need we can merge the fix immediately, but otherwise I'll just wait.