CompatHelper: bump compat for SymbolicUtils to 4, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -71,7 +71,7 @@ RuntimeGeneratedFunctions = "0.5.12"
 SciMLBase = "2.84"
 Setfield = "1"
 StructuralIdentifiability = "0.5.11"
-SymbolicUtils = "3.20"
+SymbolicUtils = "3.20, 4"
 Symbolics = "6.31.1"
 Unitful = "1.12.4"
 julia = "1.10"