split trufflehog scan into two actions, run on entire repo on scheduled event

[pstjohn]

Should fix the scheduled nightly tests that are currently failing on the trufflehog scan step.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.28%. Comparing base (16513e8) to head (2a4f429).
⚠️ Report is 522 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #696   +/-   ##
=======================================
  Coverage   86.28%   86.28%           
=======================================
  Files         119      119           
  Lines        7238     7238           
=======================================
  Hits         6245     6245           
  Misses        993      993           

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