chore: app version bumpup

apps/emqx_ds_shared_sub/src/emqx_ds_shared_sub.app.src

@@ -1,6 +1,6 @@
 {application, emqx_ds_shared_sub, [
     {description, "EMQX DS Shared Subscriptions"},
-    {vsn, "0.2.0"},
+    {vsn, "0.2.1"},
     {registered, [emqx_ds_shared_sub_sup]},
     {mod, {emqx_ds_shared_sub_app, []}},
     {applications, [