feat: quicker _get_data_objects query for athena

[sean-eyre]

The current query used to get data objects in Athena becomes very slow as more models are included.

This PR uses a "CTE of VALUES with a join" strategy to speed up the query time significantly. From ~4 mins to <10 seconds when querying for 412 objects in my case.

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[erindru]

Nice, thanks!

Can you please sign the CLA and also enable the Athena integration tests to run for this PR, which you can do by adjusting the engine_tests_cloud section in .circleci/continue_config.yml to something like:

          matrix:
            parameters:
              engine:
#                - snowflake
#                - databricks
#                - redshift
#                - bigquery
#                - clickhouse-cloud
                - athena
#                - gcp-postgres
#          filters:
#            branches:
#              only:
#                - main

(that is, comment out the branch filter and the other databases to get the athena tests to run)