depends: latest config.guess and config.sub #22071

This is split out of #21851. Updating these files should be mechanical, and shouldn't have to wait for that PR. Also, having support in depends for the new arm-apple-darwin target (added in 2593751ef276497e312d7c4ce7fd049614c7bf80) is useful when debugging. i.e #22070.

If you try and compile depends for a arm-apple-darwin target using master, on a x86_64 darwin machine, currently you'll get:

gmake -C depends -j9 HOST=arm64-apple-darwin
Invalid configuration `arm64-apple-darwin': machine `arm64-apple' not recognized
shasum: hosts/.mk: No such file or directory
<omitted>
Makefile:111: hosts/.mk: No such file or directory
gmake: *** No rule to make target 'hosts/.mk'.  Stop.

Checked that the following gives no output, on top of this PR:

git clone git://git.savannah.gnu.org/config.git
cd config
git checkout 4550d2f15b3a7ce2451c1f29500b9339430c877f # head as of 2021-05-26
cp config.guess config.sub ../bitcoin/depends/
cd ../bitcoin
git diff

The build still works here, but didn't try any more obscure platforms. ACK 7e2a9890e50969cdfdd08d735fa8f3c611a663a7

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