Upgrade/Install: Improve plugin update icon alignment.

This changeset improves the vertical alignment of the plugin update button in the Plugins screen.

Props Presskopp, sabernhardt, costdev, eherman24.
Fixes #56123.

Built from https://develop.svn.wordpress.org/trunk@53717


git-svn-id: http://core.svn.wordpress.org/trunk@53276 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/common-rtl.css

@@ -1575,6 +1575,9 @@ div.error {
 .wrap .notice p:before,
 .import-php .updating-message:before {
 	margin-left: 6px;
+}
+
+.import-php .updating-message:before {
 	vertical-align: bottom;
 }