[gnome-music/wip/jfelder/remove-margin-left-right: 9/19] artistalbumwidget: Remove margin_left and margin_right usage

[Jean Felder <jfelder src gnome org>]

commit f66665318f60de9c210b1c9ca1a03f6eb1daa1ee
Author: Jean Felder <jfelder src gnome org>
Date:   Mon Mar 22 21:45:28 2021 +0100

    artistalbumwidget: Remove margin_left and margin_right usage
    
    They are now deprecated and have been removed in Gtk4. Use
    margin-start and margin-end instead.

 data/ui/ArtistAlbumWidget.ui | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/data/ui/ArtistAlbumWidget.ui b/data/ui/ArtistAlbumWidget.ui
index e25083ce6..c3ef050eb 100644
--- a/data/ui/ArtistAlbumWidget.ui
+++ b/data/ui/ArtistAlbumWidget.ui
@@ -3,16 +3,16 @@
 <interface>
   <requires lib="gtk+" version="3.12"/>
   <template parent="GtkBox" class="ArtistAlbumWidget">
-    <property name="margin_top">20</property>
-    <property name="margin_right">120</property>
+    <property name="margin-end">120</property>
+    <property name="margin-top">20</property>
     <property name="visible">True</property>
     <child>
       <object class="ArtStack" id="_art_stack">
         <property name="visible">True</property>
-       <property name="margin_top">20</property>
-       <property name="margin_right">30</property>
-        <property name="margin_bottom">20</property>
-       <property name="margin_left">120</property>
+        <property name="margin-bottom">20</property>
+        <property name="margin-end">30</property>
+        <property name="margin-start">120</property>
+        <property name="margin-top">20</property>
         <property name="can_focus">False</property>
         <property name="valign">start</property>
       </object>