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Configurable

RemoveRootFromConvertDbUrlRector

Remove deprecated string $root argument from Database::convertDbUrlToConnectionInfo()

-Database::convertDbUrlToConnectionInfo($url, $this->root, TRUE);
+Database::convertDbUrlToConnectionInfo($url, TRUE);

Configure your rector.php:

<?php

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

return RectorConfig::configure()
    ->withConfiguredRule(RemoveRootFromConvertDbUrlRector::class, [
        new DrupalIntroducedVersionConfiguration('11.3.0'),
    ]);