Update docs/Project.toml

Author: isaacsas

docs/Project.toml

@@ -63,7 +63,7 @@ IncompleteLU = "0.2"
 JumpProcesses = "9.13.2"
 Latexify = "0.16.5"
 LinearSolve = "2.30, 3"
-ModelingToolkit = "9.65"
+ModelingToolkit = "9.68.1"
 NetworkLayout = "0.4"
 NonlinearSolve = "3.12, 4"
 Optim = "1.9"