sysutils/xxd: Add missing conflict with vim console flavor
Reported by: Steven Nikkel <steven_nikkel@ertyu.org> (via email)
Approved by: Gianmarco Giovannelli <gmarco@giovannelli.it> (maintainer)
MFH: 2023Q3
(cherry picked from commit 25122d0e5673c9ba2f91fe32d806cf3e91d23194)