chore: add conflict on elasticsearch >= 8.0 (api-platform#5018)

Author: alanpoulain

composer.json

@@ -92,7 +92,8 @@
         "doctrine/common": "<2.7",
         "doctrine/dbal": "<2.10",
         "doctrine/mongodb-odm": "<2.2",
-        "doctrine/persistence": "<1.3"
+        "doctrine/persistence": "<1.3",
+        "elasticsearch/elasticsearch": ">=8.0"
     },
     "suggest": {
         "doctrine/mongodb-odm-bundle": "To support MongoDB. Only versions 4.0 and later are supported.",