Toucan-connectors

Fix

- BigQuery: the JWT token auth method is now supported in the status check.
- HTTP: allow connector to be instantiated without passing positional arguments to auth.

Fix

- OracleSQL: Fix jinja templates and test string fixtures

Changed

- Datetime series returned by our connectors don't have timezones anymore

Changed

- OracleSQL: Add variables templating support

Fix

- MySQL: An unknown exception during the status check now makes the check fail

Changed

- MySQL: Add an optional `charset_collation` to the connector, as PyMySQL >=1.1.0 always runs a `SET NAMES` on connection,
which breaks on servers using a non-default collation

Fix

- MySQL: Allow dict parameters to be used with PyMySQL 1.1.1
- MySQL: Use a regular PyMySQL Cursor rather than a DictCursor when pandas 2.x is used

Fixed

- Google Big Query: the query generated by `get_model` now correctly quotes the dataset name, which allows to build a
DB models for datasets starting with a number

Fixed

- Elasticsearch: force `widget="json"` on `body` so the form is properly filled when updating a data source