Update ekka to v0.5.4

Makefile

@@ -9,7 +9,7 @@ dep_jsx     = git-emqx https://github.com/talentdeficit/jsx 2.9.0
 dep_gproc   = git-emqx https://github.com/uwiger/gproc 0.8.0
 dep_gen_rpc = git-emqx https://github.com/emqx/gen_rpc 2.3.1
 dep_esockd  = git-emqx https://github.com/emqx/esockd v5.4.4
-dep_ekka    = git-emqx https://github.com/emqx/ekka v0.5.3
+dep_ekka    = git-emqx https://github.com/emqx/ekka v0.5.4
 dep_cowboy  = git-emqx https://github.com/ninenines/cowboy 2.6.1
 dep_replayq = git-emqx https://github.com/emqx/replayq v0.1.1
 

rebar.config

@@ -7,7 +7,7 @@
 %% appended to deps in rebar.config.script
 {github_emqx_deps,
     [{gen_rpc, "2.3.1"},
-     {ekka, "v0.5.3"},
+     {ekka, "v0.5.4"},
      {replayq, "v0.1.1"},
      {esockd, "v5.4.4"},
      {cuttlefish, "v2.2.1"}