⬆ Bump rich-toolkit from 0.15.1 to 0.18.1 (#35)

Bumps rich-toolkit from 0.15.1 to 0.18.1.

---
updated-dependencies:
- dependency-name: rich-toolkit
  dependency-version: 0.18.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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