deskutils/sigi: update to 3.6.0

ChangeLog: https://github.com/sigi-cli/sigi/releases/tag/v3.6.0

Support platform-specific standard location for data file.This means it will
follow idiomatic locations. Any previous data will be preserved and moved
automatically.

PR: 271196
Reported by: hiljusti@so.dang.cool (maintainer)