CompatHelper: bump compat for StatsBase to 0.34, (keep existing compat)

[github-actions[bot]]

This pull request changes the compat entry for the StatsBase package from 0.33 to 0.33, 0.34. 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[bot]]

Codecov Report

Merging #55 (d941d92) into main (fbbdd0a) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##              main       #55   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          154       154           
=========================================
  Hits           154       154           

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[palday]