Merge bitcoin/bitcoin#27508: build: use latest config.{guess,sub} in depends

4a3f1db depends: latest config.sub (fanquake)
ac462c5 depends: latest config.guess (fanquake)

Pull request description:

  Been a few years since we last updated these.
  Also related to bitcoin/bitcoin#26422 (comment).

ACKs for top commit:
  TheCharlatan:
    ACK 4a3f1db
  hebasto:
    ACK 4a3f1db, I've got zero diff with files from the [upstream](https://git.savannah.gnu.org/gitweb/?p=config.git;a=tree).

Tree-SHA512: 8f1af0813c56289c796a6e74965632dd6fa6dd135409250b2d5ebf7c1c2bfb4001195d35e5d7ecc0cad2a049468193b9fefc2b26beb7669afe6bba4d9c3ffa33

Author: fanquake