Fix phpstan issues (or ignore them).

app/Handlers/Observer/AccountObserver.php

@@ -25,6 +25,7 @@ declare(strict_types=1);
 namespace FireflyIII\Handlers\Observer;
 
 use FireflyIII\Models\Account;
+use FireflyIII\Models\Attachment;
 use FireflyIII\Models\PiggyBank;
 use FireflyIII\Repositories\Attachment\AttachmentRepositoryInterface;
 use FireflyIII\Repositories\UserGroups\Account\AccountRepositoryInterface;
@@ -81,6 +82,7 @@ class AccountObserver
         foreach ($account->piggyBanks()->get() as $piggy) {
             $piggy->accounts()->detach($account);
         }
+        /** @var Attachment $attachment */
         foreach ($account->attachments()->get() as $attachment) {
             $repository->destroy($attachment);
         }