feat(mailcap): let zathura open PDFs

GitOrigin-RevId: 840efe6569533df9d7957d5cb86f82eedd0c2c23
diff --git a/dot_mailcap b/dot_mailcap
index 15c9674..5403df2 100644
--- a/dot_mailcap
+++ b/dot_mailcap
@@ -1 +1,2 @@
 image/*; (clear && img2sixel %s); needsterminal
+application/pdf; zathura %s;