update doc compat

Author: TorkelE

docs/Project.toml

@@ -51,7 +51,7 @@ IncompleteLU = "0.2"
 JumpProcesses = "9.11"
 Latexify = "0.16"
 LinearSolve = "2.30"
-ModelingToolkit = "9.15"
+ModelingToolkit = "9.16.0"
 NonlinearSolve = "3.12"
 Optim = "1.9"
 Optimization = "3.25"
@@ -69,4 +69,4 @@ StaticArrays = "1.9"
 SteadyStateDiffEq = "2.2"
 StochasticDiffEq = "6.65"
 StructuralIdentifiability = "0.5.8"
-Symbolics = "5.28"
+Symbolics = "5.30.1"