[gimp] build: sync nightly flatpak with recent changes on stable one.

[Jehan <jehanp src gnome org>]

commit dc6c14c29fab25f3de87e1d0eaf4e761bdfd698e
Author: Jehan <jehan girinstud io>
Date:   Thu Jul 5 13:29:26 2018 +0200

    build: sync nightly flatpak with recent changes on stable one.
    
    Exiv2 and GExiv2 has been updated and using "app-id" instead of "id".

 build/flatpak/org.gimp.GIMP-nightly.json | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/build/flatpak/org.gimp.GIMP-nightly.json b/build/flatpak/org.gimp.GIMP-nightly.json
index 8103c4c3a6..f2a35a1563 100644
--- a/build/flatpak/org.gimp.GIMP-nightly.json
+++ b/build/flatpak/org.gimp.GIMP-nightly.json
@@ -1,5 +1,5 @@
 {
-    "id": "org.gimp.GIMP",
+    "app-id": "org.gimp.GIMP",
     "branch": "master",
     "runtime": "org.gnome.Platform",
     "runtime-version": "3.28",
@@ -91,8 +91,8 @@
                     "sources": [
                         {
                             "type": "archive",
-                            "url": "http://www.exiv2.org/exiv2-0.25.tar.gz";,
-                            "sha256": "c80bfc778a15fdb06f71265db2c3d49d8493c382e516cb99b8c9f9cbde36efa4"
+                            "url": "http://www.exiv2.org/builds/exiv2-0.26-trunk.tar.gz";,
+                            "sha256": "c75e3c4a0811bf700d92c82319373b7a825a2331c12b8b37d41eb58e4f18eafb"
                         },
                         {
                             "type": "shell",
@@ -105,8 +105,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://download.gnome.org/sources/gexiv2/0.10/gexiv2-0.10.6.tar.xz";,
-                    "sha256": "132788919667254b42c026ab39ab3c3a5be59be8575c05fa4b371ca8aed55825"
+                    "url": "https://download.gnome.org/sources/gexiv2/0.10/gexiv2-0.10.8.tar.xz";,
+                    "sha256": "81c528fd1e5e03577acd80fb77798223945f043fd1d4e06920c71202eea90801"
                 }
             ]
         },