Update: hessian2 & getty version

go.mod

@@ -4,7 +4,7 @@ require (
 	github.com/Workiva/go-datastructures v1.0.50
 	github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5
 	github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190802083043-4cd0c391755e // indirect
-	github.com/apache/dubbo-go-hessian2 v1.4.0
+	github.com/apache/dubbo-go-hessian2 v1.5.0
 	github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23 // indirect
 	github.com/coreos/bbolt v1.3.3 // indirect
 	github.com/coreos/etcd v3.3.13+incompatible
@@ -12,7 +12,7 @@ require (
 	github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f // indirect
 	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
 	github.com/creasty/defaults v1.3.0
-	github.com/dubbogo/getty v1.3.3
+	github.com/dubbogo/getty v1.3.4
 	github.com/dubbogo/go-zookeeper v1.0.0
 	github.com/dubbogo/gost v1.8.0
 	github.com/emicklei/go-restful/v3 v3.0.0