chore: bump version && update change

apps/emqx_utils/src/emqx_utils.app.src

@@ -2,7 +2,7 @@
 {application, emqx_utils, [
     {description, "Miscellaneous utilities for EMQX apps"},
     % strict semver, bump manually!
-    {vsn, "5.0.15"},
+    {vsn, "5.0.16"},
     {modules, [
         emqx_utils,
         emqx_utils_api,

changes/ce/fix-12620.en.md

@@ -0,0 +1 @@
+Fixed the sensitive headers for HTTP connector may be printed in the `debug` level log.