chore(deps): bump poise from 557c4cf to 7844c03

Bumps [poise](https://github.com/serenity-rs/poise) from `557c4cf` to `7844c03`.
- [Release notes](https://github.com/serenity-rs/poise/releases)
- [Commits](serenity-rs/poise@557c4cf...7844c03)

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

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