Merge branch '3.4' into 4.4

* 3.4:
  Add Tagalog translations for validator messages 94, 95, 96 and 99
  PHPUnit's assertContains() performs strict comparisons now.
  [ClassLoader][Routing] Fix namespace parsing on php 8.
  Fix deprecated libxml_disable_entity_loader
  Made reference to PHPUnit\Util\XML::loadfile php5-compatible.
  [Validator] Add missing translations for german and vietnamese
  Modernized deprecated PHPUnit assertion calls
  [Console] The message of "class not found" errors has changed in php 8.
  The PHPUnit\Util\XML class has been removed in PHPUnit 9.3.
  [Console] Make sure we pass a numeric array of arguments to call_user_func_array().
  [Serializer] Fix that it will never reach DOMNode
  [Validator] sync translations
  [VarDumper] Improve previous fix on light array coloration
  [Cache] Fix #37667

Author: fabpot

Tests/Resources/IconTest.php

@@ -20,7 +20,7 @@ class IconTest extends TestCase
      */
     public function testIconFileContents($iconFilePath)
     {
-        $this->assertRegExp('~<svg xmlns="http://www.w3.org/2000/svg" width="\d+" height="\d+" viewBox="0 0 \d+ \d+">.*</svg>~s', file_get_contents($iconFilePath), sprintf('The SVG metadata of the %s icon is different than expected (use the same as the other icons).', $iconFilePath));
+        $this->assertMatchesRegularExpression('~<svg xmlns="http://www.w3.org/2000/svg" width="\d+" height="\d+" viewBox="0 0 \d+ \d+">.*</svg>~s', file_get_contents($iconFilePath), sprintf('The SVG metadata of the %s icon is different than expected (use the same as the other icons).', $iconFilePath));
     }
 
     public function provideIconFilePaths()