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

[github-actions]

This pull request changes the compat entry for the TrixiTest package from 0.1.3 to 0.1.3, 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 97.30%. Comparing base (3e380e4) to head (24e1e2f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #132   +/-   ##
=======================================
  Coverage   97.30%   97.30%           
=======================================
  Files          30       30           
  Lines        3903     3903           
=======================================
  Hits         3798     3798           
  Misses        105      105           

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