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Configurable

RemoveConfigSaveTrustedDataArgRector

Remove deprecated boolean $has_trusted_data argument from Config::save() calls

-$config->save(TRUE);
+$config->save();

Configure your rector.php:

<?php

use DrupalRector\Drupal11\Rector\Deprecation\RemoveConfigSaveTrustedDataArgRector;
use DrupalRector\Rector\ValueObject\DrupalIntroducedVersionConfiguration;
use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withConfiguredRule(RemoveConfigSaveTrustedDataArgRector::class, [
        new DrupalIntroducedVersionConfiguration('11.4.0'),
    ]);