[gnome-photos/sam/libgdata-main-branch] flatpak: libgdata default branch was renamed to "main"

[Sam Thursfield <sthursfield src gnome org>]

commit fa79cd0f51e75a08309dd5a16cdc86b4d65b72b9
Author: Sam Thursfield <sam afuera me uk>
Date:   Mon Jul 26 16:23:56 2021 +0200

    flatpak: libgdata default branch was renamed to "main"
    
    See: https://gitlab.gnome.org/GNOME/libgdata/-/commit/b741c223ae203c1c5014e777172cd3466dd59c1b
    
    Fixes https://gitlab.gnome.org/GNOME/gnome-photos/-/issues/182

 flatpak/org.gnome.Photos.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/flatpak/org.gnome.Photos.json b/flatpak/org.gnome.Photos.json
index 443fb61e..1da11e53 100644
--- a/flatpak/org.gnome.Photos.json
+++ b/flatpak/org.gnome.Photos.json
@@ -137,7 +137,8 @@
             "sources": [
                 {
                     "type": "git",
-                    "url": "https://gitlab.gnome.org/GNOME/libgdata.git";
+                    "url": "https://gitlab.gnome.org/GNOME/libgdata.git";,
+                    "branch": "main"
                 }
             ]
         },