use AKS 1.22 for e2e exp

Author: Cecile Robert-Michon

test/e2e/config/azure-dev.yaml

@@ -172,7 +172,7 @@ providers:
         new: "--v=2"
 
 variables:
-  AKS_KUBERNETES_VERSION: "${KUBERNETES_VERSION:-stable-1.19}"
+  AKS_KUBERNETES_VERSION: "${KUBERNETES_VERSION:-stable-1.22}"
   KUBERNETES_VERSION: "${KUBERNETES_VERSION:=stable-1.22}"
   ETCD_VERSION_UPGRADE_TO: "3.5.0-0"
   COREDNS_VERSION_UPGRADE_TO: "v1.8.4"