Upgrade to snowflake-connector-python 4.0.0 and set cert lock timeout to prevent deadlock

[wiggzz]

Fix snowflakedb/snowflake-connector-python#2213

Problem

Snowflake queries can hang at exit

Solution

Upstream snowflake-connector-python added a fix for the hang which is to add a timeout to the certificate lock (which was deadlocking). This comes in snowflake-connector-python 4.0.0 and requires the explicit use of a timeout.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX

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[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change in the dbt-snowflake package. For details on how to document a change, see the Contributing Guide.

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[wiggzz]

Actually, looks like snowflakedb/snowflake-connector-python@b301717 is in main which will mean the next release should fix this. Unclear what the timeline on a new release is though.

[wiggzz]

Actually, looks like snowflakedb/snowflake-connector-python@b301717 is in main which will mean the next release should fix this. Unclear what the timeline on a new release is though.

Ok the new snowflake connector version fix is in but it requires a specific timeout parameter to be set. I'll see how difficult it is to upgrade to 4.0.0 and go from there.