CompatHelper: bump compat for DiffEqBase to 6, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -13,7 +13,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [compat]
 Catalyst = "9, 10"
-DiffEqBase = "6.54 - 6.81"
+DiffEqBase = "6.54 - 6.81, 6"
 MacroTools = "0.5.5, 0.5.6"
 Reexport = "1"
 RuntimeGeneratedFunctions = "0.5"