upgrade to phpstan lvl 9

src/Support/Container.php

@@ -37,7 +37,7 @@ final class Container
      *
      * @param class-string $id
      *
-     * @return object
+     * @return mixed
      */
     public function get(string $id)
     {

src/Support/HigherOrderMessageCollection.php

@@ -40,6 +40,7 @@ final class HigherOrderMessageCollection
     public function chain(object $target): void
     {
         foreach ($this->messages as $message) {
+            //@phpstan-ignore-next-line
             $target = $message->call($target) ?? $target;
         }
     }