[Flatpak SDK] local build is broken

https://bugs.webkit.org/show_bug.cgi?id=235265

Reviewed by Philippe Normand.

The local build of Flatpak SDK is broken due to a missing reference to the freedesktop sdk.
This change updates the reference.

* elements/freedesktop-sdk.bst:



Canonical link: https://commits.webkit.org/246092@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@288072 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Tools/buildstream/ChangeLog

@@ -1,3 +1,15 @@
+2022-01-16  ChangSeok Oh  <changseok@webkit.org>
+
+        [Flatpak SDK] local build is broken
+        https://bugs.webkit.org/show_bug.cgi?id=235265
+
+        Reviewed by Philippe Normand.
+
+        The local build of Flatpak SDK is broken due to a missing reference to the freedesktop sdk.
+        This change updates the reference.
+
+        * elements/freedesktop-sdk.bst:
+
 2021-11-30  Philippe Normand  <pnormand@igalia.com>
 
         [Flatpak SDK] Update to FDO 21.08.6 release

Tools/buildstream/elements/freedesktop-sdk.bst

@@ -3,7 +3,7 @@ sources:
 - kind: git_tag
   url: gitlab_com:freedesktop-sdk/freedesktop-sdk.git
   track: 'release/21.08'
-  ref: freedesktop-sdk-21.08.6-13-g6a4b45189f5087bd40f96757b9f970880aa8e5bc
+  ref: freedesktop-sdk-21.08.9-25-gfb49cd02a3869721e08be44e068979ce98da6da6
 config:
   options:
     target_arch: '%{arch}'