Adapt to Enzyme breaking change (#118)

Incidentally this extension doesn't have any code broken by the breaking change. Nevertheless trying to open / flag early for the ecosystem

Author: wsmoses

Project.toml

@@ -15,7 +15,7 @@ QuadGKEnzymeExt = "Enzyme"
 [compat]
 DataStructures = "0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19"
 LinearAlgebra = "<0.0.1, 1"
-Enzyme = "0.12"
+Enzyme = "0.12, 0.13"
 julia = "1.6"
 
 [extras]