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UiHelperTraitDrupalPostFormRector

Fixes deprecated UiHelperTrait::drupalPostForm() calls

 $edit = [];
 $edit['action'] = 'action_goto_action';
-$this->drupalPostForm('admin/config/system/actions', $edit, 'Create');
+$this->drupalGet('admin/config/system/actions');
+$this->submitForm($edit, 'Create');
 $edit['action'] = 'action_goto_action_1';
-$this->drupalPostForm(null, $edit, 'Edit');
+$this->submitForm($edit, 'Edit');

Configure your rector.php:

<?php

use DrupalRector\Drupal9\Rector\Deprecation\UiHelperTraitDrupalPostFormRector;
use Rector\Config\RectorConfig;

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