Run postgres setup trigger in transaction

src/Symfony/Component/Messenger/Bridge/Doctrine/Transport/PostgreSqlConnection.php

@@ -109,6 +109,7 @@ final class PostgreSqlConnection extends Connection
     private function getTriggerSql(): array
     {
         return [
+            'BEGIN;',
             sprintf('LOCK TABLE %s;', $this->configuration['table_name']),
             // create trigger function
             sprintf(<<<'SQL'
@@ -123,6 +124,7 @@ SQL
             // register trigger
             sprintf('DROP TRIGGER IF EXISTS notify_trigger ON %s;', $this->configuration['table_name']),
             sprintf('CREATE TRIGGER notify_trigger AFTER INSERT ON %1$s FOR EACH ROW EXECUTE PROCEDURE notify_%1$s();', $this->configuration['table_name']),
+            'COMMIT;',
         ];
     }