v.1.31.0

Improvements:

1. Service dependencies were updated.

Bugs fixed:

1. [LUNA-8851] fixed description of the post agent streams response: the event_source_group field, the event_meta field of streams.analytics items, and the intervals field of streams.analytics items are now correctly described as nullable

2. [LUNA-8851] fixed description of the post streams feedback response: the streams list may now be empty

Migration:

See a migration manual.