ports-mgmt/pkg: update to 1.17.5

Changes from 1.17.4 to 1.17.5

• pkg add: only runs triggers at the end of the equivalent of a transaction
• pkg search: fix the combinaison of -q and -o
• pkg fetch: correctly exit with error on fetch failures
• Improve error message when failing to drop privileges

(cherry picked from commit 18793d10585f6e95abcc6e70d514f0fcdc18cbbc)