[gnome-shell] extensions-app: Vertically center updates bar text

[Marge Bot <marge-bot src gnome org>]

commit 1359cedc001ae9c06317872a3fd9e00490c3ac5a
Author: Romain Vigier <romain romainvigier fr>
Date:   Tue Oct 5 09:49:13 2021 +0200

    extensions-app: Vertically center updates bar text
    
    With the new stylesheet, the text is too close to the bar border.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1997>

 subprojects/extensions-app/data/ui/extensions-window.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/subprojects/extensions-app/data/ui/extensions-window.ui 
b/subprojects/extensions-app/data/ui/extensions-window.ui
index e849b48f1e..f96441c488 100644
--- a/subprojects/extensions-app/data/ui/extensions-window.ui
+++ b/subprojects/extensions-app/data/ui/extensions-window.ui
@@ -234,6 +234,7 @@
             <child>
               <object class="GtkBox">
                 <property name="orientation">vertical</property>
+                <property name="valign">center</property>
                 <child>
                   <object class="GtkLabel">
                     <property name="halign">start</property>