pgpkeys: Unbreak PGP keyring

gpg: invalid armor header:
mQINBF+5ojQBEADSqQjD4h1lOwAGgmz4dK0Zf4JkoJCpQ7jw2B5jigNySdKf1rQN\n

^^  Using GnuPG 1

A blank line before the key body is needed.

PR: 257830 [1]
PR: 257783 [2]
Reported by: Dave Evans <dave.evans55@googlemail.com> [1]
Reported by: Markus Stoff <markus@stoffdv.at> [2]