test_deliver_after and test_deliver_at failed with latest Pulsar image

[BewareMyPower]

See https://github.com/BewareMyPower/pulsar-client-python/actions/runs/12278258523/job/34259522071?pr=7

======================================================================
FAIL: test_deliver_after (__main__.PulsarTest.test_deliver_after)
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Traceback (most recent call last):
  File "/home/runner/work/pulsar-client-python/pulsar-client-python/tests/pulsar_test.py", line 327, in test_deliver_after
    with self.assertRaises(pulsar.Timeout):
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Timeout not raised

======================================================================
FAIL: test_deliver_at (__main__.PulsarTest.test_deliver_at)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/runner/work/pulsar-client-python/pulsar-client-python/tests/pulsar_test.py", line 308, in test_deliver_at
    with self.assertRaises(pulsar.Timeout):
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Timeout not raised

[BewareMyPower]

These tests passed after I switched back to the 4.0.0 image, see https://github.com/BewareMyPower/pulsar-client-python/actions/runs/12289443615/job/34294947018?pr=7