Explicitly install `packaging` to comply with `setuptools>=71.0`

[mikealfare]

Problem

setuptools>=71.0 appears to take an undeclared dependency on packaging>=24.1. If an older version of packaging is installed in your environment, setuptools will break.

Solution

Explicitly upgrade packaging when installing setuptools.

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

[github-actions[bot]]

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

[github-actions[bot]]

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