linkerd/linkerd2 edge-21.4.5

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edge-21.4.5

This edge release adds a new --short flag to linkerd check to show a
summary of the check output. This release also includes various proxy bug fixes
and improvements.

• Proxy
  • Fixed a task leak that would be triggered when clients disconnect a
    service in failfast.
  • Improved admin server protocol detection so that error messages are
    more descriptive about the underlying problem.
  • Fixed panics found in fuzz testing. These panics were extremely
    unlikely to occur in practice and would require very specific
    configuration overrides to be triggered.
• CLI
  • Added support for a --short flag to the check command to output a summary
    of check results