Merge branch '3.4' into 4.0

* 3.4:
  [2.7] Fix issues found by PHPStan
  [Command] Fix upgrade guide example
  Add php_unit_dedicate_assert to PHPCS
  [WebProfilerBundle] Let fetch() cast URL to string
  improve FormType::getType exception message details
  [Intl] Update ICU data to 60.2
  [Console] fix a bug when you are passing a default value and passing -n would ouput the index
  [FrameworkBundle] fix merge of 3.3 into 3.4
  bumped Symfony version to 3.4.3
  updated VERSION for 3.4.2
  updated CHANGELOG for 3.4.2

Author: nicolas-grekas

Tests/DependencyInjection/ValidateWorkflowsPassTest.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Symfony\Component\Workflow\Tests;
+namespace Symfony\Component\Workflow\Tests\DependencyInjection;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\ContainerBuilder;