update snapshots

Author: TrevorBergeron

packages/bigframes/tests/unit/core/compile/sqlglot/snapshots/test_dataframe_accessor/test_bigframes_sql_scalar/out.sql

@@ -1,4 +1,4 @@
 SELECT
   `rowindex`,
-  ROUND(`int64_col` + `int64_too`) AS `0`
+  ROUND(`int64_col` + `int64_too`) AS `bigframes_unnamed_column`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`

packages/bigframes/tests/unit/core/compile/sqlglot/snapshots/test_dataframe_accessor/test_sql_scalar/out.sql

@@ -1,4 +1,4 @@
 SELECT
   `rowindex`,
-  ROUND(`int64_col` + `int64_too`) AS `0`
+  ROUND(`int64_col` + `int64_too`) AS `bigframes_unnamed_column`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`