fix: our own fork is not maintained (#202)

Author: spacewander

rockspec/lua-resty-etcd-master-0.1-0.rockspec

@@ -14,7 +14,7 @@ description = {
 
 dependencies = {
    "api7-lua-resty-http = 0.1.0",
-   "api7-lua-protobuf = 0.1.1",
+   "lua-protobuf = 0.4.1",
    "luafilesystem = 1.7.0-2",
    "penlight = 1.9.2-1",
    "lua-typeof = 0.1"