minor #780 Fixed PHP 7.1.3 tests by using PHPUnit 8.5 (wouterj)

This PR was merged into the 1.0-dev branch.

Discussion
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Fixed PHP 7.1.3 tests by using PHPUnit 8.5

This fixes the broken PHP 8 tests, as they were using PHPUnit 7.5 (which doesn't support PHP 8).

This version is also proposed to the official recipes and will probably be merged shortly: symfony/recipes#868

Commits
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c739e34 Do not set a PHPUnit version

Author: weaverryan

src/Test/MakerTestEnvironment.php

@@ -373,13 +373,19 @@ private function buildFlexSkeleton()
             $this->fs->symlink($rootPath.'/vendor/symfony/phpunit-bridge', $this->flexPath.'/vendor/symfony/phpunit-bridge');
         }
 
-        // temporarily ignoring indirect deprecations - see #237
         $replacements = [
+            // temporarily ignoring indirect deprecations - see #237
             [
                 'filename' => '.env.test',
                 'find' => 'SYMFONY_DEPRECATIONS_HELPER=999999',
                 'replace' => 'SYMFONY_DEPRECATIONS_HELPER=max[self]=0',
             ],
+            // do not explicitly set the PHPUnit version
+            [
+                'filename' => 'phpunit.xml.dist',
+                'find' => '<server name="SYMFONY_PHPUNIT_VERSION" value="8.5" />',
+                'replace' => '',
+            ],
         ];
         $this->processReplacements($replacements, $this->flexPath);
         // end of temp code