There's a merged pull request on the void-packages repository

mupdf: update to 1.23.10
https://github.com/void-linux/void-packages/pull/48724

Description:
- I tested the changes in this PR: yes

With this mupdf version, which includes https://git.ghostscript.com/?p=mupdf.git;h=9c9ae0f6ef3ef45cb9ee8add96c6ee598b5f3080 , sioyek correctly parses the TOC of certain documents, see https://github.com/ahrm/sioyek/issues/856

cc #48182