Allow doctrine/persistence 3 (#365)

Author: hlecorche

composer.json

@@ -24,7 +24,7 @@
         "doctrine/data-fixtures": "^1.3",
         "doctrine/doctrine-bundle": "^1.11|^2.0",
         "doctrine/orm": "^2.6.0",
-        "doctrine/persistence": "^1.3.7|^2.0",
+        "doctrine/persistence": "^1.3.7|^2.0|^3.0",
         "symfony/config": "^3.4|^4.3|^5.0|^6.0",
         "symfony/console": "^3.4|^4.3|^5.0|^6.0",
         "symfony/dependency-injection": "^3.4.47|^4.3|^5.0|^6.0",