* Release 11.3.21
* Add security fix changelog
* Update changelog with helm annotations PR as late addition
* Fix typo in changelog entry (spelling)
* Json Unmarshal Panic fix
From recent fuzzing work a new panic was discovered where a pointer is allocated then a pointer to the pointer is passed into json.Unmarshal. It is then possible for this original pointer to remain a `nil` reference.
This pattern looks unexpected, so all cases of double pointers being passed into json.Unmarshal were changed to the more standard empty struct pointer style to avoid potential nil reference panics.
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Co-authored-by: Mike Jensen <mike.jensen@goteleport.com>