Bump DiffEqBase to force fix of downstream

Author: ChrisRackauckas

Project.toml

@@ -48,7 +48,7 @@ AbstractTrees = "0.3"
 ArrayInterface = "3.1.39, 4"
 ConstructionBase = "1"
 DataStructures = "0.17, 0.18"
-DiffEqBase = "6.54.0"
+DiffEqBase = "6.81.0"
 DiffEqCallbacks = "2.16"
 DiffEqJump = "7.0, 8"
 DiffRules = "0.1, 1.0"