fix(Postgres Chat Memory Node): Do not terminate the connection pool (#12674)

packages/@n8n/nodes-langchain/nodes/memory/MemoryPostgresChat/MemoryPostgresChat.node.ts

@@ -115,12 +115,7 @@ export class MemoryPostgresChat implements INodeType {
 			...kOptions,
 		});
 
-		async function closeFunction() {
-			void pool.end();
-		}
-
 		return {
-			closeFunction,
 			response: logWrapper(memory, this),
 		};
 	}