PKGBUILD: add my PGP key
PKGBUILD: add my PGP key

Obtained using:

	$ gpg --list-key gael.portay@gmail.com
	pub   rsa4096 2018-11-19 [SC]
	      8F3491E60E62695ED780AC672FA122CA0501CA71
	uid           [ultimate] Gaël PORTAY <gael.portay@gmail.com>
	sub   rsa4096 2018-11-19 [E]

gazoo74/dosh