CompatHelper: bump compat for DynamicPPL to 0.30, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the DynamicPPL package from 0.28 to 0.28, 0.30.
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 74.95%. Comparing base (9c8eadc) to head (049f53f).
Report is 62 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #100      +/-   ##
==========================================
+ Coverage   74.89%   74.95%   +0.06%     
==========================================
  Files          20       20              
  Lines        3190     3190              
==========================================
+ Hits         2389     2391       +2     
+ Misses        801      799       -2     

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