[gnome-text-editor] prefs: add GtkSource dependency to <requires/>

[Christian Hergert <chergert src gnome org>]

commit d1fd603245a7fe16d86976bd079f0beb352d1efa
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jan 28 11:59:17 2022 -0800

    prefs: add GtkSource dependency to <requires/>

 src/editor-preferences-dialog.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/editor-preferences-dialog.ui b/src/editor-preferences-dialog.ui
index e5c47a8..f6d33c5 100644
--- a/src/editor-preferences-dialog.ui
+++ b/src/editor-preferences-dialog.ui
@@ -2,6 +2,7 @@
 <interface>
   <requires lib="gtk" version="4.0"/>
   <requires lib="Adw" version="1.0"/>
+  <requires lib="GtkSource" version="5.0"/>
   <template class="EditorPreferencesDialog" parent="AdwPreferencesWindow">
     <property name="default-height">700</property>
     <style>