[gnome-photos/wip/jimmac/preview-shading] flatpak: Workaround broken nightly SDK

[Debarshi Ray <debarshir src gnome org>]

commit 83a2f9797556442c485942452730fc7394b7d384
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Dec 13 17:56:06 2018 +0100

    flatpak: Workaround broken nightly SDK

 flatpak/org.gnome.Photos.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/flatpak/org.gnome.Photos.json b/flatpak/org.gnome.Photos.json
index 335e7b29..90819117 100644
--- a/flatpak/org.gnome.Photos.json
+++ b/flatpak/org.gnome.Photos.json
@@ -1,7 +1,7 @@
 {
     "app-id": "org.gnome.Photos",
     "runtime": "org.gnome.Platform",
-    "runtime-version": "master",
+    "runtime-version": "3.30",
     "sdk": "org.gnome.Sdk",
     "command": "gnome-photos",
     "tags": [ "nightly" ],