Updated MCP Streamable HTTP (#3929)

* Added success response

* fixed securityDefinitions

Author: Laskewitz

custom-connectors/MCP-Streamable-HTTP/apiDefinition.swagger.json

@@ -21,8 +21,8 @@
             "description": "Success"
           }
         }
-      },
-      "securityDefinitions": {}
+      }
     }
-  }
+  },
+  "securityDefinitions": {}
 }