CompatHelper: bump compat for SciMLBase to 2, (keep existing compat)

[github-actions[bot]]

This pull request changes the compat entry for the SciMLBase package from 1.90 to 1.90, 2. 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.

[ChrisRackauckas]

This should be safe unless you have something with SDEs, then just make sure you check the constructor changes.

[codecov[bot]]

Codecov Report

Merging #246 (a25493c) into main (9a6699e) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #246   +/-   ##
=======================================
  Coverage   95.69%   95.69%           
=======================================
  Files          33       33           
  Lines        1232     1232           
=======================================
  Hits         1179     1179           
  Misses         53       53           

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