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

[github-actions]

This pull request changes the compat entry for the SciMLBase package from 2.145.0 - 2.145, 2 to 2.145.0 - 2.145, 2, 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.

[jack-champagne]

Closing — the SciML ecosystem is mid-migration to SciMLBase v3, but key upstream dependencies (notably OrdinaryDiffEqTsit5, all registered versions through v1.12.0) still cap their SciMLBase compat at "2.x". With force_latest_compatible_version=true in CI, the resolver tries to use SciMLBase v3 but can't find a compatible OrdinaryDiffEqTsit5, producing:

empty intersection between SciMLBase@2.155.1 and project compatibility 3

Once the OrdinaryDiffEq sub-packages register SciMLBase v3-compatible compat bounds, CompatHelper will generate a fresh PR that resolves cleanly.