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drupal/core 11.4

RemoveInstallSchemaSystemSequencesRector

Remove deprecated KernelTestBase::installSchema('system', 'sequences') calls; the sequences table was removed in Drupal 12.

-$this->installEntitySchema('node');
-$this->installSchema('system', ['sequences']);
+$this->installEntitySchema('node');

Configure your rector.php:

<?php

use DrupalRector\Drupal11\Rector\Deprecation\RemoveInstallSchemaSystemSequencesRector;
use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withRules([
        RemoveInstallSchemaSystemSequencesRector::class,
    ]);

Other rules in the drupal/core 11.4 set