[snowflake] Add ocsp_fail_open setting for SnowflakeHook

[jcrobak]

Adds support for passing through the ocsp_fail_open parameter. Ref: https://docs.snowflake.com/en/developer-guide/python-connector/python-connector-connect#choosing-fail-open-or-fail-close-mode

The ocsp_fail_open parameter defaults to True inside of the driver when the snowflake-connector version is 1.8.0 or later. So the usual case for overriding the setting will be providing a False value. That is different than other flags (where we only pass through True), so you may notice some difference in the flag handling.

Also, for building the sqlalchemy engine, this parameter needs to be passed in as part of connect_args.

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[boring-cyborg]

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[jcrobak]

Thanks for the review @potiuk !! The build failed with:

The image /mnt/ci-image-save-linux_amd64-3.9.tar does not exist.

during the "Prepare breeze & CI Image: 3.9" step of Lowest direct dependency providers tests / All-core:LowestDeps-Postgres:13:3.9.

I don't think this is related to this change, so I have rebased to see if it can pick up any fixes for main. Do you mind kicking off the CI again?

[boring-cyborg]

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