Revert circleci changes

Author: erindru

.circleci/continue_config.yml

@@ -308,16 +308,16 @@ workflows:
           matrix:
             parameters:
               engine:
-                #- snowflake
-                #- databricks
-                #- redshift
-                #- bigquery
-                #- clickhouse-cloud
+                - snowflake
+                - databricks
+                - redshift
+                - bigquery
+                - clickhouse-cloud
                 - athena
-          #filters:
-          # branches:
-          #   only:
-          #     - main
+          filters:
+           branches:
+             only:
+               - main
       - trigger_private_tests:
           requires:
             - style_and_cicd_tests