sysutils/password-store: update to version 1.6.5

• enable shell completions by default (bash, fish, zsh) [1]
• do not remove XClip and GIT functionality [2]

PR: 195951 [1]
Submitted by: rs.os@t-online.de [1], milki [2]
Reviewed by: milki [2], eadler [2]
Differential Revision: https://reviews.freebsd.org/D4208 [2] (to 1.6.4)