zathura: update to version 0.5.4

Changelog:

zathura 0.5.4
2023/12/09
Changelog

    Various fixes and improvements

zathura 0.5.3
2023/12/08
Changelog

    Add support to display signatures
    Fix clearing of highlighted links
    Make some key modifiers configurable
    Fix text selection on rotated pages
    Fix gap between pages
    Updated translations

zathura 0.5.2
2022/11/27
Changelog

    Improve text selection
    Various fixes and improvements
    Updated translations

zathura 0.5.1
2022/09/09
Changelog

    seccomp: Make glibc fallback to clone instead of using clone3

zathura 0.5.0
2022/09/08
Changelog

    magic is now a required dependency
    Various fixes and improvements

(nikita)