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

[github-actions]

This pull request changes the compat entry for the SciMLBase package from 2.74.1 to 2.74.1, 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 94.05%. Comparing base (678d182) to head (408eb30).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #72   +/-   ##
=======================================
  Coverage   94.05%   94.05%           
=======================================
  Files           2        2           
  Lines         101      101           
=======================================
  Hits           95       95           
  Misses          6        6           

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