Change CI to use dbt-sa-python instead of dbt-python

[ash2shukla]

Resolves #

Problem

dbt-python crate was renamed to dbt-sa-python with shared core crate CI build should use that crate instead now.

Solution

Modify release-v2.yml to utilize the new crate.

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 or 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.
• This PR includes type annotations for new and modified functions.