Allow Zygote 0.7 (#208)

Author: mcabbott

Project.toml

@@ -1,6 +1,6 @@
 name = "Optimisers"
 uuid = "3bd65402-5787-11e9-1adc-39752487f4e2"
-version = "0.4.3"
+version = "0.4.4"
 authors = ["Mike J Innes <[email protected]>"]
 
 [deps]
@@ -24,7 +24,7 @@ ChainRulesCore = "1"
 EnzymeCore = "0.8.5"
 Functors = "0.4.9, 0.5"
 Statistics = "1"
-Zygote = "0.6.40"
+Zygote = "0.6.40, 0.7.1"
 julia = "1.10"
 
 [extras]