Merge pull request #360 from SciML/compathelper/new_version/2024-02-22-07-04-13-177-02295560637

CompatHelper: bump compat for ModelingToolkit to 9 for package downstream, (keep existing compat)

Author: ChrisRackauckas

test/downstream/Project.toml

@@ -3,13 +3,13 @@ ModelingToolkit = "961ee093-0014-501f-94e3-6117800e7a78"
 MonteCarloMeasurements = "0987c9cc-fe09-11e8-30f0-b96dd679fdca"
 OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
-Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 Tracker = "9f7883ad-71c0-57eb-9f7f-b5c9e6d3789c"
+Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
 [compat]
-ModelingToolkit = "8.33"
+ModelingToolkit = "8.33, 9"
 MonteCarloMeasurements = "1.1"
 OrdinaryDiffEq = "6.31"
-Unitful = "1.17"
-Tracker = "0.2"
 StaticArrays = "1"
+Tracker = "0.2"
+Unitful = "1.17"