test: new enzyme version

Author: avik-pal

Project.toml

@@ -4,7 +4,7 @@ authors = [
     "Pankaj Mishra <pankajmishra1511@gmail.com>",
     "Chris Rackauckas <contact@chrisrackauckas.com>",
 ]
-version = "2.20.0"
+version = "2.21.0"
 
 [deps]
 ADTypes = "47edcb42-4c32-4615-8424-f2b9edc5f35b"
@@ -48,7 +48,7 @@ Adapt = "3, 4"
 ArrayInterface = "7.4.2"
 Compat = "4"
 DataStructures = "0.18"
-Enzyme = "0.11,0.12"
+Enzyme = "0.13"
 FiniteDiff = "2.8.1"
 ForwardDiff = "0.10"
 Graphs = "1"