chore: bump connector version

apps/emqx_connector/src/emqx_connector.app.src

@@ -1,7 +1,7 @@
 %% -*- mode: erlang -*-
 {application, emqx_connector, [
     {description, "An OTP application"},
-    {vsn, "0.1.8"},
+    {vsn, "0.1.9"},
     {registered, []},
     {mod, {emqx_connector_app, []}},
     {applications, [