Release async-nats/v0.22.1

Overview

A patch release, including early feedback to 0.22.0.

Breaking Changes

Unfortunately, the last release included a typo in retry_on_initial_release.
This patch fixes it.
We decided to make a regular patch release without yanking as we're a pre 1.0.0 version.
To avoid similar situations in the future, spellcheck lint will be added before the next release.

Changed

• Flush on publish ack await by @Jarema in #708

Fixed

• Fix typo in retry_on_initial_connect by @Jarema in #713

Added

• Setup cargo deny to check licenses by @corbinu in #703