build(deps): bump prettyplease from 0.2.19 to 0.2.20 (#32259)

Bumps [prettyplease](https://github.com/dtolnay/prettyplease) from 0.2.19 to 0.2.20.
- [Release notes](https://github.com/dtolnay/prettyplease/releases)
- [Commits](dtolnay/prettyplease@0.2.19...0.2.20)

---
updated-dependencies:
- dependency-name: prettyplease
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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