[gnome-music/wip/jfelder/playertoolbar-margin] playertoolbar: Remove margin property usage

[Jean Felder <jfelder src gnome org>]

commit 91cac18674f09e8235ac6c2d273807d2f52a70d6
Author: Jean Felder <jfelder src gnome org>
Date:   Sat Jan 8 21:32:32 2022 +0100

    playertoolbar: Remove margin property usage
    
    It has been removed in Gtk4.
    Use margin-{bootom, end, start, top} instead.

 data/ui/PlayerToolbar.ui | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)
---
diff --git a/data/ui/PlayerToolbar.ui b/data/ui/PlayerToolbar.ui
index fe73ce709..3742d8957 100644
--- a/data/ui/PlayerToolbar.ui
+++ b/data/ui/PlayerToolbar.ui
@@ -39,7 +39,10 @@
         <property name="has_tooltip">True</property>
         <property name="valign">center</property>
         <property name="spacing">8</property>
-        <property name="margin">6</property>
+        <property name="margin-bottom">6</property>
+        <property name="margin-end">6</property>
+        <property name="margin-start">6</property>
+        <property name="margin-top">6</property>
         <signal name="query-tooltip" handler="_on_tooltip_query"/>
         <child>
           <object class="ArtStack" id="_art_stack">
@@ -86,7 +89,10 @@
         <property name="orientation">vertical</property>
         <property name="visible">True</property>
         <property name="can_focus">False</property>
-        <property name="margin">6</property>
+        <property name="margin-bottom">6</property>
+        <property name="margin-end">6</property>
+        <property name="margin-start">6</property>
+        <property name="margin-top">6</property>
         <child>
           <object class="GtkBox" id="buttons">
             <property name="visible">True</property>
@@ -209,7 +215,10 @@
         <property name="can_focus">False</property>
         <property name="halign">end</property>
         <property name="valign">center</property>
-        <property name="margin">6</property>
+        <property name="margin-bottom">6</property>
+        <property name="margin-end">6</property>
+        <property name="margin-start">6</property>
+        <property name="margin-top">6</property>
         <child>
           <object class="GtkMenuButton" id="_repeat_menu_button">
             <property name="visible">True</property>