[cantarell-fonts] Add instance_ufos to gitignore

[Nikolaus Waxweiler <nwaxweiler src gnome org>]

commit cdbc6d8367fe0ccfaec7adeed0c9a26b2f020741
Author: Nikolaus Waxweiler <madigens gmail com>
Date:   Sun Sep 2 20:40:38 2018 +0200

    Add instance_ufos to gitignore

 .gitignore | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/.gitignore b/.gitignore
index bff11a02..00d7e57f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,4 +44,5 @@
 /tags
 .DS_Store
 src/*(Automatisch gesichert)*
-venv
\ No newline at end of file
+venv
+instance_ufos