[niepce] flatpak: upgrade libgphoto2 to latest

[Hubert Figuière <hub src gnome org>]

commit 8e50a6d0066cf4e93c5d753eb3fc59fda1f862c2
Author: Hubert Figuière <hub figuiere net>
Date:   Sat Dec 22 19:36:39 2018 -0500

    flatpak: upgrade libgphoto2 to latest

 flatpak/org.gnome.Niepce.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/flatpak/org.gnome.Niepce.json b/flatpak/org.gnome.Niepce.json
index d9d1f50..43e777b 100644
--- a/flatpak/org.gnome.Niepce.json
+++ b/flatpak/org.gnome.Niepce.json
@@ -44,8 +44,8 @@
             "sources" : [
                 {
                     "type" : "archive",
-                    "url" : 
"https://cytranet.dl.sourceforge.net/project/gphoto/libgphoto/2.5.16/libgphoto2-2.5.16.tar.bz2";,
-                    "sha256" : "e757416d1623e01a9d0d294b2e790162e434c0964f50d3b7ff1a3424b62a2906"
+                    "url" : 
"https://cytranet.dl.sourceforge.net/project/gphoto/libgphoto/2.5.21/libgphoto2-2.5.21.tar.bz2";,
+                    "sha256" : "c5572b1a52af32a40ca6a014682f7548bfb58d47109ad77fba29ec295b448bb1"
                 }
             ]
         },