[ADAP-591] Dropped support for Python 3.7

[McKnight-42]

Is this your first time submitting a feature request?

• [X] I have read the expectations for open source contributors
• [X] I have searched the existing issues, and I could not find an existing issue for this feature
• [X] I am requesting a straightforward extension of existing dbt-spark functionality, rather than a Big Idea better suited to a discussion

Describe the feature

along with core and other adapters remove support for Python 3.7 before EOL support

see: https://github.com/dbt-labs/dbt-core/issues/7082

Describe alternatives you've considered

No response

Who will this benefit?

No response

Are you interested in contributing this feature?

No response

Anything else?

No response