CompatHelper: bump compat for SciMLBase to 3 for package test, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the SciMLBase package from 2.30 to 2.30, 3 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 92.25%. Comparing base (a132289) to head (4d16dcc).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #331      +/-   ##
==========================================
- Coverage   92.91%   92.25%   -0.66%     
==========================================
  Files          13       13              
  Lines         607      607              
==========================================
- Hits          564      560       -4     
- Misses         43       47       +4     

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