[PhpUnitBridge] Require PHPUnit 9.6 by default

Author: nicolas-grekas

bin/simple-phpunit.php

@@ -98,10 +98,8 @@
 };
 
 if (\PHP_VERSION_ID >= 80000) {
-    // PHP 8 requires PHPUnit 9.3+, PHP 8.1 requires PHPUnit 9.5+
-    $PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '9.5') ?: '9.5';
+    $PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '9.6') ?: '9.6';
 } elseif (\PHP_VERSION_ID >= 70200) {
-    // PHPUnit 8 requires PHP 7.2+
     $PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '8.5') ?: '8.5';
 } else {
     $PHPUNIT_VERSION = $getEnvVar('SYMFONY_PHPUNIT_VERSION', '7.5') ?: '7.5';