[Composer] Added conflict with doctrine/orm:2.20.7 due to broken Enti… (#669)

Author: micszo

composer.json

@@ -82,6 +82,7 @@
         "symfony/dependency-injection": "5.3.7",
         "symfony/security-core": "5.3.0",
         "doctrine/dbal": "2.7.0",
+        "doctrine/orm": "2.20.7",
         "ezsystems/ezpublish-legacy": "*",
         "phpunit/phpunit": "8.4.0"
     },