v2.2.0 - tests: Replace 'offset' and 'negative_utc' with 'offset_bytes' - deposit: Remove 'negative_utc' from test data - tests: Use TimestampWithTimezone.from_datetime() instead of the constructor - Add releases notes (from user-provided Atom document) to release messages. - deposit: Strip 'offset_bytes' from date dicts to support swh-model 4.0.0 - Pin mypy and drop type annotations which makes mypy unhappy