Revert Elastica 7 BC break

Author: XWB

composer.json

@@ -19,7 +19,7 @@
         "symfony/property-access": "^3.4|^4",
         "pagerfanta/pagerfanta": "^1.0.5|^2.0",
         "psr/log": "^1.0",
-        "ruflin/elastica": "^5.3.5|^6.1.1|^7.0"
+        "ruflin/elastica": "^5.3.5|^6.1.1"
     },
     "require-dev": {
         "doctrine/orm": "^2.5",