[Bug] GitHub Actions: Deprecating save-state and set-output commands

[kevinneville]

Is this a new bug in dbt_metrics?

• I believe this is a new bug in dbt_metrics
• I have searched the existing issues, and I could not find an existing issue for this bug

Current Behavior

GitHub Actions: Deprecating save-state and set-output commands, these should be replaced with the proposed solution.
See https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/.

Expected Behavior

We should not see the warnings.

Steps To Reproduce

Run all GH checks.

Relevant log output

No response

Environment

- dbt-adapter & version:
- dbt_metrics version:

Which database adapter are you using with dbt?

No response

Additional Context

No response

[callum-mcdata]

Closed out with #213!