test: increase timeout passed to `producer.wait_requests_finished` in `test_pipeline.py`
The tests in test_pipeline.py
are regularly failing because of
producer.wait_requests_finished
that raises an AsapoTimeOutError
(see for example https://gitlab.desy.de/asapo/asapo/-/jobs/567443).
This commit increases the timeout from 3 to 10 seconds to reduce the
number of such errors and the number of times where CI jobs
test_wheels-python3xx_dev
fail.