Merge pull request #2487 from SciML/compathelper/new_version/2024-02-23-00-17-53-039-03560617746

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

Author: ChrisRackauckas

docs/Project.toml

@@ -25,7 +25,7 @@ BifurcationKit = "0.3"
 DifferentialEquations = "7.6"
 Distributions = "0.25"
 Documenter = "1"
-ModelingToolkit = "8.33"
+ModelingToolkit = "8.33, 9"
 ModelingToolkitDesigner = "1"
 NonlinearSolve = "0.3, 1, 2, 3"
 Optim = "1.7"