Log Message:
sayaka: update to 3.7.2.

pkgsrc changes:
- update DESCR (forgot to commit in previous)

Upstream changes:
* 3.7.2 (2023/10/19)
 - fix a problem that transparent webp images are not drawn
 - add --show-cw and --shownsfw options
 - support NSFW images
 - format messages a bit
 - show external instance names
 - implement reconnection on network errors