[gnome-software: 1/2] flatpak: Pin appstream to 0.15.2

[Philip Withnall <pwithnall src gnome org>]

commit e994fae966cef126d4a26d17c0ab9abb047748c9
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Mon May 16 09:23:22 2022 +0200

    flatpak: Pin appstream to 0.15.2
    
    This is needed as newer version requires Meson 0.62, which isn't
    available in the master runtime at the moment.

 contrib/org.gnome.SoftwareDevel.json | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/contrib/org.gnome.SoftwareDevel.json b/contrib/org.gnome.SoftwareDevel.json
index 2e80db92a..577aef740 100644
--- a/contrib/org.gnome.SoftwareDevel.json
+++ b/contrib/org.gnome.SoftwareDevel.json
@@ -87,7 +87,9 @@
             "sources": [
                 {
                     "type": "git",
-                    "url": "https://github.com/ximion/appstream.git";
+                    "url": "https://github.com/ximion/appstream.git";,
+                    "tag": "v0.15.2",
+                    "commit": "d2bfe7c2a4ca692daf33a5cb4d429011269d1cba"
                 }
             ]
         },