chore: bump gw_jt808 app vsn

apps/emqx_gateway_jt808/src/emqx_gateway_jt808.app.src

@@ -1,7 +1,7 @@
 %% -*- mode: erlang -*-
 {application, emqx_gateway_jt808, [
     {description, "JT/T 808 Gateway"},
-    {vsn, "0.0.2"},
+    {vsn, "0.0.3"},
     {registered, []},
     {applications, [kernel, stdlib, emqx, emqx_gateway]},
     {env, []},