tests.system.test_asyncpg_iam_auth: test_lazy_iam_authn_connection_with_asyncpg failed

[flaky-bot]

Note: #1280 was also for this test, but it was closed more than 10 days ago. So, I didn't mark it flaky.

---

commit: dc907ef
buildURL: https://github.com/GoogleCloudPlatform/cloud-sql-python-connector/actions/runs/15147145095
status: failed

[flaky-bot]

Looks like this issue is flaky. 😟

I'm going to leave this open and stop commenting.

A human should fix and close this.

---

When run at the same commit (dc907ef), this test passed in one build (https://github.com/GoogleCloudPlatform/cloud-sql-python-connector/actions/runs/15147145095) and failed in another build (https://github.com/GoogleCloudPlatform/cloud-sql-python-connector/actions/runs/15147145095).