[shotwell] flatpak: Update libraw to latest stable

[Jens Georg <jensgeorg src gnome org>]

commit 08bce359be273c0333b29bbe2b9a256a00dbbe6f
Author: Jens Georg <mail jensge org>
Date:   Wed Jun 6 11:55:26 2018 +0200

    flatpak: Update libraw to latest stable

 flatpak/org.gnome.Shotwell.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/flatpak/org.gnome.Shotwell.json b/flatpak/org.gnome.Shotwell.json
index d9f8a0af..61dad79a 100644
--- a/flatpak/org.gnome.Shotwell.json
+++ b/flatpak/org.gnome.Shotwell.json
@@ -127,8 +127,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://www.libraw.org/data/LibRaw-0.18.8.tar.gz";,
-                    "sha256": "56aca4fd97038923d57d2d17d90aa11d827f1f3d3f1d97e9f5a0d52ff87420e2"
+                    "url": "https://www.libraw.org/data/LibRaw-0.18.11.tar.gz";,
+                    "sha256": "7cf724a40a0d8915869498f51062a952167e4f5bae2b6920542c9e0e079a471d"
                 },
                 {
                     "type": "patch",