fix(deps): update module github.com/mattn/go-sixel to v0.0.9#267

renovate[bot] wants to merge 1 commit intomainkoki-develop/gat:mainfrom

renovate/github.com-mattn-go-sixel-0.xkoki-develop/gat:renovate/github.com-mattn-go-sixel-0.xCopy head branch name to clipboard