Bump Elastica dependency

Author: XWB

composer.json

@@ -19,7 +19,7 @@
         "symfony/property-access": "^3.2|^4",
         "pagerfanta/pagerfanta": "^1.0.5",
         "psr/log": "^1.0",
-        "ruflin/elastica": "^5.2.1"
+        "ruflin/elastica": "^5.2.1|^6.0"
     },
     "require-dev": {
         "doctrine/orm": "^2.5",