[gnome-control-center] network: Center connection-editor spinner

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit fc8817380d2c9de62ded824a6d17c30134576f9a
Author: Christopher Davis <christopherdavis gnome org>
Date:   Fri Feb 4 12:36:35 2022 -0800

    network: Center connection-editor spinner
    
    Prevents the spinner from taking up a large amount
    of space.

 panels/network/connection-editor/connection-editor.ui | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/panels/network/connection-editor/connection-editor.ui 
b/panels/network/connection-editor/connection-editor.ui
index 98105ce78..7456b7448 100644
--- a/panels/network/connection-editor/connection-editor.ui
+++ b/panels/network/connection-editor/connection-editor.ui
@@ -33,6 +33,8 @@
             <property name="vexpand">True</property>
             <child>
               <object class="GtkSpinner" id="spinner">
+                <property name="halign">center</property>
+                <property name="valign">center</property>
                 <property name="spinning">True</property>
               </object>
             </child>