Add doctrine/orm conflict

Author: liszkapawel

composer.json

@@ -55,8 +55,10 @@
         "symfony/browser-kit": "4.1.8",
         "symfony/dom-crawler": "4.1.8",
         "symfony/routing": "4.1.8",
-        "symfony/doctrine-bridge": "4.4.16"
+        "symfony/doctrine-bridge": "4.4.16",
+        "doctrine/orm": ">=2.15.2"
     },
+    
     "suggest": {
         "stefandoorn/sitemap-plugin": "^2.0@alpha"
     },