This stable release fixes a proxy task leak that could be triggered when clients disconnect when a service is in failfast. It also includes fixes for the fuzz testing that was performed on the proxy and its dependencies; check out the [Introducing fuzz testing for Linkerd](https://linkerd.io/2021/05/07/fuzz-testing-for-linkerd/) blog post for a summary of that work! * Added versions to the the hint URLs output by the `check` command so that users are directed to the correct stable version documentation * Fixed an issue where the opaque ports annotation on a namespace would overwrite the annotations on services in that namespace