ci: work around wonkiness in arch-travis
ci: work around wonkiness in arch-travis

Partial upgrades and installs without database upgrade are not
supported. We work around the issue by uprading the database
ourselves and install the packages that may have been missed.

anthraxx/arch-security-tracker,jelly/arch-security-tracker,anthraxx/arch-security-tracker,anthraxx/arch-security-tracker,archlinux/arch-security-tracker,archlinux/arch-security-tracker,jelly/arch-security-tracker