Cloud Build Failure Reporter: pg-continuous-test-on-merge (langchain-cloud-sql-testing) failed

Cloud Build Failure Reporter found test failure for [**pg-continuous-test-on-merge (langchain-cloud-sql-testing)** ](https://github.com/googleapis/langchain-google-cloud-sql-pg-python/runs/41142149764) at [ac047fe75e64275c6982ceebc060a41bc6cda727](https://github.com/googleapis/langchain-google-cloud-sql-pg-python/commit/ac047fe75e64275c6982ceebc060a41bc6cda727). Please fix the error and then close the issue after the **pg-continuous-test-on-merge (langchain-cloud-sql-testing)** test passes.