Log Message:
sayaka: update to 3.8.1.

pkgsrc change:
 - remove a local patch fixed in upstream

Upstream changes:
* 3.8.1 (2024/09/21)
 - support notifications of reactions and followed
 - implement keep alive
 - implement retry of back off on disconnections
 - support transparent images
 - improve visibility of monochrome and 8 color images
 - implement `overwrite-cache` option
 - restore `--sixel-or` (formerly `--ormode=on`) option
 - fix `--local` option that required an argument since v3.8.0
 - fix a problem that images with less than 6 pixel height were not shown