This replaces the old OpenPGPv4 key that is used in the test suite
with a more modern OpenPGPv4 key. The key is the Alice key from
https://datatracker.ietf.org/doc/draft-bre-openpgp-samples/. All
cryptographic artifacts in the test suite are updated accordingly.
Having old cryptographic artifacts in the test suite presents a
problem once the old algorithms are rejected by contemporary
implementations.
The test signing key succumbed to either expiration or bitrot.
I hope I didn't just publish my secret key to the world.
* test/lisp/emacs-lisp/package-resources/key.pub: Refresh.
* test/lisp/emacs-lisp/package-resources/key.sec: Refresh.