[fractal] flatpak: Pin gspell to 1.8.1

[Alexandre Franke <afranke src gnome org>]

commit f029e514b6da97ee817a51b5232d9e8bd07e83ef
Author: Christopher Davis <brainblasted disroot org>
Date:   Sat Aug 10 23:32:56 2019 -0700

    flatpak: Pin gspell to 1.8.1
    
    gspell currently has an issue that causes a build
    failure. This commit is necessary to fix CI and development
    builds until gspell is fixed.

 flatpak/org.gnome.Fractal.json | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/flatpak/org.gnome.Fractal.json b/flatpak/org.gnome.Fractal.json
index 4d8e44fa..13304460 100644
--- a/flatpak/org.gnome.Fractal.json
+++ b/flatpak/org.gnome.Fractal.json
@@ -75,8 +75,9 @@
             "name": "gspell",
             "sources" : [
                 {
-                    "type" : "git",
-                    "url" : "https://gitlab.gnome.org/GNOME/gspell.git";
+                    "type" : "archive",
+                    "url" : "https://download.gnome.org/sources/gspell/1.8/gspell-1.8.1.tar.xz";,
+                    "sha256" : "819a1d23c7603000e73f5e738bdd284342e0cd345fb0c7650999c31ec741bbe5"
                 }
             ]
         },