build: bump MTK compat

Author: AayushSabharwal

Project.toml

@@ -62,7 +62,7 @@ LaTeXStrings = "1.3.0"
 Latexify = "0.16.6"
 MacroTools = "0.5.5"
 Makie = "0.22.1"
-ModelingToolkit = "9.69"
+ModelingToolkit = "9.73"
 NetworkLayout = "0.4.7"
 Parameters = "0.12"
 Reexport = "1.0"