CompatHelper: bump compat for SciMLOperators to 0.4, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the SciMLOperators package from 0.3 to 0.3, 0.4.
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 15.80%. Comparing base (243bff7) to head (e5203f3).
Report is 3 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (243bff7) and HEAD (e5203f3). Click for more details.

HEAD has 8 uploads less than BASE

Flag	BASE (243bff7)	HEAD (e5203f3)
	10	2

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #466       +/-   ##
===========================================
- Coverage   93.00%   15.80%   -77.20%     
===========================================
  Files          48       49        +1     
  Lines        3030     2999       -31     
===========================================
- Hits         2818      474     -2344     
- Misses        212     2525     +2313     

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