[5.4] Allow PhpUnitBridge v7

Author: nicolas-grekas

composer.json

@@ -54,7 +54,6 @@
         "doctrine/dbal": "<2.13.1",
         "doctrine/lexer": "<1.1",
         "doctrine/orm": "<2.7.4",
-        "phpunit/phpunit": "<5.4.3",
         "symfony/cache": "<5.4",
         "symfony/dependency-injection": "<4.4",
         "symfony/form": "<5.4.21|>=6,<6.2.7",