Include a pre-release in the dbt-adapters pin to allow pre-releases to be installed on main

[mikealfare]

Problem

We are pinning dbt-adapters with only final releases, which causes pip to skip all pre-releases for dbt-adapters.

Solution

Include a lower bound using the first pre-release on PyPI, which will allows installation of pre-releases, such as 1.0.0b1.

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]

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-spark contributing guide.