Site Health: Add timezone to Site Health Info page.

Props justinahinon, sharaz, artisticasad, Rarst.
Fixes #47842.
Built from https://develop.svn.wordpress.org/trunk@45889


git-svn-id: http://core.svn.wordpress.org/trunk@45700 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-debug-data.php

@@ -71,6 +71,10 @@ class WP_Debug_Data {
 					'label' => __( 'User Language' ),
 					'value' => get_user_locale(),
 				),
+				'timezone'               => array(
+					'label' => __( 'Timezone' ),
+					'value' => wp_timezone_string(),
+				),
 				'home_url'               => array(
 					'label'   => __( 'Home URL' ),
 					'value'   => get_bloginfo( 'url' ),

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45888';
+$wp_version = '5.3-alpha-45889';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.