zathura-pdf-mupdf: Update print/zathura-pdf-mupdf to 0.3.2

pkgsrc changes:
- Remove patches/patch-image.c, patches/patch-index.c, patches/patch-page.c,
  patches/patch-plugin.h, patches/patch-render.c, patches/patch-select.c,
  patches/patch-utils.c . They were all applied upstream and no more needed.

Changes:
0.3.2
-----
* Compatible with mupdf 1.12
* Adapt to new plugin interface

(leot)