CompatHelper: bump compat for DynamicPPL in [extras] to 0.39, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the DynamicPPL package from 0.35, 0.38 to 0.35, 0.38, 0.39.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.82%. Comparing base (fcfd436) to head (3b827b2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #385   +/-   ##
=======================================
  Coverage   87.82%   87.82%           
=======================================
  Files         107      107           
  Lines        2654     2654           
=======================================
  Hits         2331     2331           
  Misses        323      323           

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