Add 1.19 to eks versions for official support

Author: westlywright

lib/shared/addon/utils/amazon.js

@@ -679,7 +679,7 @@ export const EKS_REGIONS = [
 ];
 
 // from https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html
-export const EKS_VERSIONS = ['1.18', '1.17', '1.16', '1.15']; // sort newest->oldest so we dont have to run any logic to sort like other provider versions
+export const EKS_VERSIONS = ['1.19', '1.18', '1.17', '1.16', '1.15']; // sort newest->oldest so we dont have to run any logic to sort like other provider versions
 
 export const nameFromResource = function(r, idField) {
   let id = r[idField];