fix: app versions emqx_auth_jwt and emqx_sn

apps/emqx_auth_jwt/src/emqx_auth_jwt.app.src

@@ -1,6 +1,6 @@
 {application, emqx_auth_jwt,
  [{description, "EMQ X Authentication with JWT"},
-  {vsn, "4.3.1"}, % strict semver, bump manually!
+  {vsn, "4.4.0"}, % strict semver, bump manually!
   {modules, []},
   {registered, [emqx_auth_jwt_sup]},
   {applications, [kernel,stdlib,jose]},

apps/emqx_sn/src/emqx_sn.app.src

@@ -1,6 +1,6 @@
 {application, emqx_sn,
  [{description, "EMQ X MQTT-SN Plugin"},
-  {vsn, "4.3.2"}, % strict semver, bump manually!
+  {vsn, "4.4.0"}, % strict semver, bump manually!
   {modules, []},
   {registered, []},
   {applications, [kernel,stdlib,esockd]},