package/swaybg: bump to version 1.2.1
See also: https://github.com/swaywm/swaybg/releases/tag/v1.2.1
Signed-off-by: James Knight <james.d.knight@live.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 2143e8f8351c177d7fce87ccacba042afea94f93)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>