All these keys had expiration dates. 'tests/keys/ed25519.pub' expired
on 2022-04-24.
Fixes <https://issues.guix.gnu.org/55506>.
* tests/keys/ed25519.pub, tests/keys/ed25519-2.pub,
tests/keys/ed25519-3.pub: Remove expiration date.
The third key will be used in an upcoming commit.
Rename public keys to .pub.
* guix/tests/gnupg.scm (%ed25519-3-public-key-file): New variable.
(%ed25519-3-secret-key-file): New variable.
(%ed25519-2-public-key-file): Renamed from %ed25519bis-public-key-file.
(%ed25519-2-secret-key-file): Renamed from %ed25519bis-secret-key-file.
* tests/keys/ed25519-3.key: New file.
* tests/keys/ed25519-3.sec: New file.
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>