[meld] flatpak: Update our GtkSourceView bundled version

[Kai Willadsen <kaiw src gnome org>]

commit 37008f41dd971b72e6d96bcdfcf872dd74d3cf52
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Fri Jan 18 09:41:17 2019 +1000

    flatpak: Update our GtkSourceView bundled version
    
    Other than just being good practice, the 3.24.9 release also has a
    performance fix for space drawing that's very nice for us.

 data/org.gnome.meld-devel.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/org.gnome.meld-devel.json b/data/org.gnome.meld-devel.json
index 9fe39bd1..98fc7ada 100644
--- a/data/org.gnome.meld-devel.json
+++ b/data/org.gnome.meld-devel.json
@@ -45,8 +45,8 @@
       "sources": [
         {
           "type": "archive",
-          "url": "https://download.gnome.org/sources/gtksourceview/3.24/gtksourceview-3.24.7.tar.xz";,
-          "sha256": "a5c20d3a6347533689358f3ea52486409f6dd41d5a69c65eab7570cfaffee8e6"
+          "url": "https://download.gnome.org/sources/gtksourceview/3.24/gtksourceview-3.24.9.tar.xz";,
+          "sha256": "699d76a453e6a3d3331906346e3dbfa25f2cbc9ec090e46635e9c6bb595e07c2"
         }
       ]
     },