failed: AtLeastOnceTest

[patriknw]

https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:772

[info] Expected: is <20>
[773](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:774)
[info]      but: was <40>
[774](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:775)
[error] Test docs.javadsl.AtLeastOnceTest.consumeOneProduceMany failed: java.lang.AssertionError: 
[775](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:776)
[error] Expected: is <20>
[776](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:777)
[error]      but: was <40>, took 10.298s
[777](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:778)
[error]     at docs.javadsl.AtLeastOnceTest.consumeOneProduceMany(AtLeastOnceTest.java:97)
[778](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:779)
[error]     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[779](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:780)
[error]     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[780](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:781)
[error]     at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[781](https://github.com/akka/alpakka-kafka/actions/runs/3089718293/jobs/4997731333#step:6:782)
[error]     at java.lang.reflect.Method.invoke(Method.java:566)