x11-wm/sway-devel: update to 1.7.115

Changes: https://github.com/swaywm/sway/compare/a5a44ba95...9e879242f
Changes: https://gitlab.freedesktop.org/wlroots/wlroots/-/compare/7298c4213...b24b50ec0
(cherry picked from commit c610be429f6ab254434dbfe4b7017abe54d59c48)