Update incremental.sql

Author: borjavb

dbt/include/bigquery/macros/materializations/incremental.sql

@@ -88,8 +88,8 @@
 
   {%- set target_relation = this %}
   {%- set existing_relation = load_relation(this) %}
-  {%- set tmp_updated_relation = generate_tmp_schema(this, tmp_schema) -%}
-  {%- set tmp_relation = make_temp_relation(tmp_updated_relation) %}
+  {%- set tmp_set_schema = generate_tmp_schema(this, tmp_schema) -%}
+  {%- set tmp_relation = make_temp_relation(tmp_set_schema) %}
 
   {#-- Validate early so we don't run SQL if the strategy is invalid --#}
   {% set strategy = dbt_bigquery_validate_get_incremental_strategy(config) -%}