SNOW-1511108 SQLAlchemy heartbeat frequency parsed as string

[sfc-gh-dszmolka]

Please answer these questions before submitting your pull requests. Thanks!

1. What GitHub issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

• SNOW-1511108
• SNOW-1511108: client_session_keep_alive_heartbeat_frequency is parsed as string instead of int snowflake-sqlalchemy#509

When coming from (snowflake-)sqlalchemy's Engine, the client_session_keep_alive_heartbeat_frequency option seems to come as string, which then will crash the connector with

..
  File "/usr/local/lib/python3.11/site-packages/snowflake/connector/connection.py", line 1680, in _validate_client_session_keep_alive_heartbeat_frequency
    elif self.client_session_keep_alive_heartbeat_frequency > real_max:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: '>' not supported between instances of 'str' and 'int'

2. Fill out the following pre-review checklist:

• I am adding a new automated test(s) to verify correctness of my new code
• I am adding new logging messages
• I am adding a new telemetry message
• I am modifying authorization mechanisms
• I am adding new credentials
• I am modifying OCSP code
• I am adding a new dependency

3. Please describe how your code solves the related issue.

We already seem to have a protection mechanism against such occasions by converting the input to int, however when we do that, it's already too late because we already tried to compare str to int and failed with TypeError.

Functionality isn't changed, just moved the conversion to happen before the comparison to int happens.

[sfc-gh-mkeller]

Could you please modify an already existing test case to check this?

🚢 🚢

[sfc-gh-dszmolka]

thank you again for the review @sfc-gh-mkeller ! could you please advise if skipping the 'Old Driver' test here would be okay? does it even have the change which we want to test here?

(marked it as skipped it because it was the only one failed with the change, using PythonConnector 1.9.1 and all other tests/build passed)

if you approve with this approach, i'll merge. Thank you in advance !