chore(deps): bump poise from b1d6bf6 to 557c4cf

Bumps [poise](https://github.com/serenity-rs/poise) from `b1d6bf6` to `557c4cf`.
- [Release notes](https://github.com/serenity-rs/poise/releases)
- [Commits](serenity-rs/poise@b1d6bf6...557c4cf)

---
updated-dependencies:
- dependency-name: poise
  dependency-type: direct:production
...

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