graphics/zathura-djvu: Update 0.2.10 => 0.2.11, take maintainership

Changelog:
https://pwmt.org/projects/zathura-djvu/changelog/0.2.11/index.html

- Switch from compiler:c11 to compiler:c17.
- Remove USES=ninja because it is implicit in USES=meson.

PR:		290886
Approved by:	Alexander Grigoryev <alexander.4mail$gmail.com> (former maintainer, implicit - innactive since 2015)