[krb5-auth-dialog] pwdialog: Use margin instead of border-width

[Guido Günther <guidog src gnome org>]

commit c0d09b9ca21e5fbaecc69cc66fb20367ba319d9b
Author: Guido Günther <agx sigxcpu org>
Date:   Thu Oct 13 17:35:12 2022 +0200

    pwdialog: Use margin instead of border-width
    
    The later doesn't exist in GTK4

 src/resources/ui/ka-pwdialog.ui | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/resources/ui/ka-pwdialog.ui b/src/resources/ui/ka-pwdialog.ui
index 30d2a69..27a3f6b 100644
--- a/src/resources/ui/ka-pwdialog.ui
+++ b/src/resources/ui/ka-pwdialog.ui
@@ -30,7 +30,10 @@
         <child>
           <object class="GtkBox">
             <property name="visible">True</property>
-            <property name="border_width">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>
             <property name="spacing">12</property>
             <child>
               <object class="GtkImage">