gpg: sync with Ubuntu keyserver
gpg: sync with Ubuntu keyserver

The default keyserver on GitHub's Action Ubuntu images behaves in a
weird way:

    gpg: key 293ACD0907D9495A: new key but contains no user ID - skipped
    gpg: Total number processed: 1
    gpg:           w/o user IDs: 1
    gpg: WARNING: nothing exported
    gpg: processing message failed: Unknown system error

... even though
https://keyserver.ubuntu.com/pks/lookup?search=0x293ACD0907D9495A&fingerprint=on&op=index
show a valid "uid Natanael Copa <ncopa@alpinelinux.org>".

fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared,fishilico/shared