Update to 1.30

Author: krunaljain

hack/aks/Makefile

@@ -9,7 +9,7 @@ AZCLI   ?= docker run --rm -v $(AZCFG):/root/.azure -v $(KUBECFG):/root/.kube -v
 
 # overrideable defaults
 AUTOUPGRADE     ?= patch
-K8S_VER         ?= 1.28
+K8S_VER         ?= 1.30
 NODE_COUNT      ?= 2
 NODE_COUNT_WIN	?= $(NODE_COUNT)
 NODEUPGRADE     ?= NodeImage