Apply suggestion from @adriendupuis

Author: adriendupuis

composer.json

@@ -34,7 +34,7 @@
         "ibexa/core-persistence": "5.0.x-dev",
         "ibexa/connector-ai": "5.0.x-dev",
         "ibexa/connector-openai": "5.0.x-dev",
-        "ibexa/mcp": "dev-main",
+        "ibexa/mcp": "5.0.x-dev",
         "ibexa/migrations": "5.0.x-dev",
         "ibexa/cart": "5.0.x-dev",
         "ibexa/installer": "5.0.x-dev",