enabled scheduled testing

[emmyoop]

resolves #63

Description
Pulled out the scheduled testing portion of #54 to unblock ti while waiting for some auths.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• I have run changie new to create a changelog entry

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (50555ee) 51.47% compared to head (e0478a5) 51.47%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #64   +/-   ##
=======================================
  Coverage   51.47%   51.47%           
=======================================
  Files          49       49           
  Lines        2856     2856           
=======================================
  Hits         1470     1470           
  Misses       1386     1386           

Flag	Coverage Δ
unit	51.47% <ø> (ø)

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[emmyoop]

test run: https://github.com/dbt-labs/dbt-common/actions/runs/7793583576