RUSTSEC-2023-0089: atomic-polyfill is unmaintained

> atomic-polyfill is unmaintained

| Details | |
| ------------------- | ---------------------------------------------- |
| Status | unmaintained |
| Package | `atomic-polyfill` |
| Version | `1.0.3` |
| URL | [https://github.com/embassy-rs/atomic-polyfill/commit/48e55c166684f37af0b00fbee5a0809b1a2bae8e](https://github.com/embassy-rs/atomic-polyfill/commit/48e55c166684f37af0b00fbee5a0809b1a2bae8e) |
| Date | 2023-07-11 |

The author has archived the GitHub repository and mentions deprecation in
project's
[README](https://github.com/embassy-rs/atomic-polyfill/blob/48e55c166684f37af0b00fbee5a0809b1a2bae8e/README.md).

## Possible alternatives

* [portable-atomic](https://crates.io/crates/portable-atomic)

See [advisory page](https://rustsec.org/advisories/RUSTSEC-2023-0089.html) for additional details.

Start with the RUSTSEC-2023-0089 advisory and locate the atomic-polyfill 1.0.3 dependency in the repository's Rust dependency manifests. Check the listed portable-atomic alternative and determine the affected build or test entry points. Done means the unmaintained dependency is no longer used and the relevant checks pass.

Written by the indexing model from the issue text.