fix(config): pin cuttlefish 3.3.3

to be backward compatible to 4.2.x
cuttlefish 3.3.3 includes a fix to handle empty string
environment variable translated to 'undefined', but not `""`

rebar.config

@@ -44,7 +44,7 @@
     , {esockd, {git, "https://github.com/emqx/esockd", {tag, "5.8.0"}}}
     , {ekka, {git, "https://github.com/emqx/ekka", {tag, "0.8.1"}}}
     , {gen_rpc, {git, "https://github.com/emqx/gen_rpc", {tag, "2.5.0"}}}
-    , {cuttlefish, {git, "https://github.com/emqx/cuttlefish", {tag, "v3.3.2"}}}
+    , {cuttlefish, {git, "https://github.com/emqx/cuttlefish", {tag, "v3.3.3"}}}
     , {minirest, {git, "https://github.com/emqx/minirest", {tag, "0.3.5"}}}
     , {ecpool, {git, "https://github.com/emqx/ecpool", {tag, "0.5.0"}}}
     , {replayq, {git, "https://github.com/emqx/replayq", {tag, "0.3.2"}}}