graphics/zathura: Update to 4.3.
- update graphics/mupdf to 1.14.0
- update graphics/zathura-pdf-mupdf to 0.3.4
PR: 235952
PR: 233727
PR: 229935
PR: 232902
PR: 233021
Approved by: tcberner (mentor), Zsolt Udvari <uzsolt@uzsolt.hu> (maintainer), Quentin Stievenart <quentin.stievenart@gmail.com> (maintainer)
Differential Revision: https://reviews.freebsd.org/D19301