Allow phpunit/php-timer 6.x

Author: mdio

composer.json

@@ -11,7 +11,7 @@
     "require": {
         "php": ">=7.4",
         "symfony/console" : "4.0|^5.0|^6.0",
-        "phpunit/php-timer": "^5.0"
+        "phpunit/php-timer": "^5.0|^6.0"
     },
     "autoload" : {
         "psr-4" : {