CompatHelper: bump compat for GradedUnitRanges to 0.2 for package test, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the GradedUnitRanges package from 0.1.7 to 0.1.7, 0.2 for package test.
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 95.18%. Comparing base (c4baa89) to head (4505147).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #43   +/-   ##
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  Coverage   95.18%   95.18%           
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  Files          14       14           
  Lines         415      415           
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  Hits          395      395           
  Misses         20       20           

Flag	Coverage Δ
docs	0.00% <ø> (ø)

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