diff -r be944660c56a -r 3d72ae0968f4 wp/wp-admin/includes/class-automatic-upgrader-skin.php
--- a/wp/wp-admin/includes/class-automatic-upgrader-skin.php	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-admin/includes/class-automatic-upgrader-skin.php	Tue Sep 27 16:37:53 2022 +0200
@@ -66,18 +66,20 @@
 	 * Stores a message about the upgrade.
 	 *
 	 * @since 3.7.0
+	 * @since 5.9.0 Renamed `$data` to `$feedback` for PHP 8 named parameter support.
 	 *
-	 * @param string|array|WP_Error $data    Message data.
-	 * @param mixed                 ...$args Optional text replacements.
+	 * @param string|array|WP_Error $feedback Message data.
+	 * @param mixed                 ...$args  Optional text replacements.
 	 */
-	public function feedback( $data, ...$args ) {
-		if ( is_wp_error( $data ) ) {
-			$string = $data->get_error_message();
-		} elseif ( is_array( $data ) ) {
+	public function feedback( $feedback, ...$args ) {
+		if ( is_wp_error( $feedback ) ) {
+			$string = $feedback->get_error_message();
+		} elseif ( is_array( $feedback ) ) {
 			return;
 		} else {
-			$string = $data;
+			$string = $feedback;
 		}
+
 		if ( ! empty( $this->upgrader->strings[ $string ] ) ) {
 			$string = $this->upgrader->strings[ $string ];
 		}