Update elephantio to version 5.1 (#140)

Author: Gared

composer.json

@@ -17,7 +17,7 @@
     "ext-json": "*",
     "guzzlehttp/guzzle": "^7.8",
     "symfony/console": "^6.4|^7.0",
-    "elephantio/elephant.io": "^4.8"
+    "elephantio/elephant.io": "5.1.*"
   },
   "require-dev": {
     "phpstan/phpstan": "^2.0",