I18N: Use a placeholder instead of the `\` character in a translatable string in `WP_REST_Users_Controller::check_user_password()`.

Props ramiy.
Fixes #50812.
Built from https://develop.svn.wordpress.org/trunk@48692


git-svn-id: http://core.svn.wordpress.org/trunk@48454 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php

@@ -1291,7 +1291,11 @@ class WP_REST_Users_Controller extends WP_REST_Controller {
 		if ( false !== strpos( $password, '\\' ) ) {
 			return new WP_Error(
 				'rest_user_invalid_password',
-				__( 'Passwords cannot contain the "\\" character.' ),
+				sprintf(
+					/* translators: %s: The '\' character. */
+					__( 'Passwords cannot contain the "%s" character.' ),
+					'\\'
+				),
 				array( 'status' => 400 )
 			);
 		}

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48689';
+$wp_version = '5.6-alpha-48692';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.