Upgrade/Install: Add timezone info to last checked update time.

The time displayed on the Updates screen matches the server time which may not be the timezone the person viewing the page is in. This change includes the timezone information with the time.

Props mkaz.
Fixes #53554.

Built from https://develop.svn.wordpress.org/trunk@52203


git-svn-id: http://core.svn.wordpress.org/trunk@51795 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/update-core.php

@@ -1046,7 +1046,7 @@ if ( 'upgrade-core' === $action ) {
 
 	echo '<p class="update-last-checked">';
 	/* translators: 1: Date, 2: Time. */
-	printf( __( 'Last checked on %1$s at %2$s.' ), date_i18n( __( 'F j, Y' ), $last_update_check ), date_i18n( __( 'g:i a' ), $last_update_check ) );
+	printf( __( 'Last checked on %1$s at %2$s.' ), date_i18n( __( 'F j, Y' ), $last_update_check ), date_i18n( __( 'g:i a T' ), $last_update_check ) );
 	echo ' <a href="' . esc_url( self_admin_url( 'update-core.php?force-check=1' ) ) . '">' . __( 'Check again.' ) . '</a>';
 	echo '</p>';
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-52202';
+$wp_version = '5.9-alpha-52203';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.