Unit test test_nack_calls_ack test hangs with google-cloud-pubsub==2.10.0

[parthea]

python-pubsublite/tests/unit/pubsublite/cloudpubsub/internal/single_partition_subscriber_test.py

Lines 250 to 252 in 1d223f4

	async def test_nack_calls_ack(
	subscriber: SinglePartitionSingleSubscriber,
	underlying,

Unit test test_nack_calls_ack() started timing out in main after google-cloud-pubsub==2.10.0 was released. See build log here and the checks in PR #310.

Test test_nack_calls_ack() no longer hangs when I change the google-cloud-pubsub dependency in setup.py from "google-cloud-pubsub >= 2.1.0, <3.0.0dev", to "google-cloud-pubsub >= 2.1.0, <3.0.0dev, !=2.10.0",