Learnosity-sdk

Fixed
- Added support for expiry date in security object.

Added
- Add Annotations API as a service

Security
- Bump certifi minimum version to 2023.7.22

Fixed
- Fixed a bug where non-ASCII characters are escaped which causes `Signature Mismatch` this is resolved by setting `ensure_ascii=False`.

Security
- Upgraded signature to match the security standard.

Security
- Update dependencies

Fixed
- Removed the explicit dependency on `urllib3` as we do not use it directly.
- Updated testing commands and dependency declaration to remove deprecated uses
of setuptool's `tests_require` configuration and `test` command.

Added
- Started active support for Python 3.7--3.9

Changed
- Dropped support for EoLed Python<3.6

Removed
- Python 2.7 compat code

Fixed
- Fixed an issue where the `DataApi` class's `results_iter` method would return no data
when receiving responses from Data API endpoints that set the "`data`" field of the
response to an object (like the [itembank/questions endpoint](https://reference.learnosity.com/data-api/endpoints/itembank_endpoints#getQuestions)
when `item_references` is included in the request).