Add conflict with doctrine/mongodb-odm-bundle which uses doctrine/cache directly

https://github.com/doctrine/DoctrineMongoDBBundle/blob/48c29009c24ff74c47782c0c9c2736f1f5fd9b0e/DependencyInjection/DoctrineMongoDBExtension.php#L14-L15

Author: GromNaN

composer.json

@@ -59,7 +59,8 @@
     },
     "conflict": {
         "doctrine/annotations": "<1.12 || >=3.0",
-        "doctrine/cache": "<1.11"
+        "doctrine/cache": "<1.11",
+        "doctrine/mongodb-odm-bundle": "<5"
     },
     "suggest": {
         "doctrine/annotations": "For annotation mapping support",