Singlestore conn attrs

[rohitsanj]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Unit tests are present
• Have you validated this change locally?

Summary of Changes

• Create a new SingleStoreDBConnection class with preprocessing logic to add SingleStore connection attributes program_name and program_version corresponding to noteable and this package's version respectively.
• Replace sqlalchemy-singlestoredb installation with explicit singlestoredb installation and sqlalchemy as extras.

Excerpt from an email from one of the SingleStore representatives:

We are requesting all SingleStore partners add a connection attribute to their connector to SingleStore, which will enable us to identify details about connections made to customers' SingleStore instances. It will help us track the health of the integration and joint customers. We will also be able to share these details across with Noteable.

[rohitsanj]

We need to bump cryptography to a minimum of 41.0.0 in order to avoid security vulnerabilities - https://pyup.io/v/59062/f17/.

However, snowflake-connector-python upper bound restricts it from being updated to that version. There's an open issue here tracking a new release with an upgraded cryptography version and one of the maintainers mentioned it should be out by Monday, if not earlier.

I guess.. we're blocked until then? @jlrobins @tizz98

 name         : cryptography
 version      : 40.0.2
 description  : cryptography is a package which provides cryptographic recipes and primitives to Python developers.

dependencies
 - cffi >=1.12

required by
 - pyopenssl >=38.0.0,<40.0.0 || >40.0.0,<40.0.1 || >40.0.1,<42
 - snowflake-connector-python >=3.1.0,<41.0.0

[tizz98]

@rohitsanj yeah pretty blocked it seems, let's see again on monday

[rohitsanj]

Updated snowflake-connector-python to 3.1.0 and cryptography to 41.x