[gnome-photos] flatpak: Update Libraw to 0.19.0

[Debarshi Ray <debarshir src gnome org>]

commit 901a147bdbc535be16f7cf42dfb613d8133becb9
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Aug 20 13:07:28 2018 +0200

    flatpak: Update Libraw to 0.19.0

 flatpak/org.gnome.Photos.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/flatpak/org.gnome.Photos.json b/flatpak/org.gnome.Photos.json
index 9c93ff0a..c51d1d0d 100644
--- a/flatpak/org.gnome.Photos.json
+++ b/flatpak/org.gnome.Photos.json
@@ -146,8 +146,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://www.libraw.org/data/LibRaw-0.18.13.tar.gz";,
-                    "sha256": "cb1f9d0d1fabc8967d501d95c05d2b53d97a2b917345c66553b1abbea06757ca"
+                    "url": "https://www.libraw.org/data/LibRaw-0.19.0.tar.gz";,
+                    "sha256": "e83f51e83b19f9ba6b8bd144475fc12edf2d7b3b930d8d280bdebd8a8f3ed259"
                 },
                 {
                     "type": "patch",