fix snapshot

Author: tswast

tests/unit/core/compile/sqlglot/expressions/snapshots/test_blob_ops/test_obj_get_access_url/out.sql

@@ -21,5 +21,5 @@ WITH `bfcte_0` AS (
 )
 SELECT
   `bfcol_0` AS `rowindex`,
-  `bfcol_10` AS `string_col`
+  `bfcol_10` AS `0`
 FROM `bfcte_3`