Merge pull request #249 from SciML/compathelper/new_version/2023-10-19-04-07-22-529-01889607198

CompatHelper: add new compat entry for ModelingToolkit at version 8 for package docs, (keep existing compat)

Author: ChrisRackauckas

docs/Project.toml

@@ -22,6 +22,7 @@ BenchmarkTools = "1"
 Documenter = "1"
 IncompleteLU = "0.2"
 LinearSolve = "2"
+ModelingToolkit = "8"
 NonlinearSolve = "1, 2"
 NonlinearSolveMINPACK = "0.1"
 SciMLNLSolve = "0.1"