CompatHelper: bump compat for GPUToolbox to 1, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the GPUToolbox package from 0.1, 0.2, 0.3 to 0.1, 0.2, 0.3, 1.
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 79.17%. Comparing base (ff1602e) to head (bcb1158).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #537      +/-   ##
==========================================
- Coverage   79.20%   79.17%   -0.03%     
==========================================
  Files          47       47              
  Lines        2996     2997       +1     
==========================================
  Hits         2373     2373              
- Misses        623      624       +1     

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