chore: update bpapi.versions

apps/emqx/priv/bpapi.versions

@@ -27,6 +27,7 @@
 {emqx_management,1}.
 {emqx_management,2}.
 {emqx_management,3}.
+{emqx_management,4}.
 {emqx_mgmt_api_plugins,1}.
 {emqx_mgmt_cluster,1}.
 {emqx_mgmt_trace,1}.