There is an updated pull request by motorto against master on the void-packages repository

https://github.com/motorto/void-packages autoconf-2.71
https://github.com/void-linux/void-packages/pull/38412

autoconf: update to 2.71.
#### Testing the changes
- I tested the changes in this PR: **YES**

#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - armv6l

I have also update autoconf-archive in this pr.

A patch file from https://github.com/void-linux/void-packages/pull/38412.patch is attached