CompatHelper: bump compat for OptimizationNLopt to 0.3, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the OptimizationNLopt package from 0.2 to 0.2, 0.3.
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 21.33%. Comparing base (e555cbf) to head (bc8ce65).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #103      +/-   ##
==========================================
- Coverage   21.39%   21.33%   -0.07%     
==========================================
  Files          36       36              
  Lines        3305     3305              
==========================================
- Hits          707      705       -2     
- Misses       2598     2600       +2     

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[fhagemann]

These are the relevant changes, not sure if they affect us:
https://github.com/SciML/Optimization.jl/compare/f5ae5b0..f799a38#diff-58e1e08
(But I think the most relevant change is going to Optimization@4)