graphics/zathura: Update to 2026.05.11
https://pwmt.org/projects/zathura/changelog/2026.05.10/index.html
https://pwmt.org/projects/zathura/changelog/2026.05.11/index.html
PR: 295208
Approved by: quentin.stievenart@gmail.com (maintainer)
Approved by: fluffy (mentor)