run tests with Twig 4

Author: dunglas

composer.json

@@ -50,7 +50,7 @@
         "symfony/http-kernel": "^4.4|^5.0|^6.0|^7.0",
         "symfony/phpunit-bridge": "^5.2|^6.0|^7.0",
         "symfony/stopwatch": "^4.4|^5.0|^6.0|^7.0",
-        "twig/twig": "^2.0|^3.0"
+        "twig/twig": "^2.0|^3.0|^4.0"
     },
     "minimum-stability": "dev"
 }