fix: Return :commit
since :ack
does not commit in v2
#84
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Checklist
Problem
When using the
brod_group_subscriber_v2
ourhandle_message/3
callback was returning{:ok, :ack, state}
. This was the old way to commit messages; in v2, it only acks and doesn't commit based on this comment:https://github.com/kafka4beam/brod/blob/master/src/brod_group_subscriber_worker.erl#L85
Details
Changed to commit