chore(deps): bump @npmcli/arborist from 9.1.6 to 9.1.8 (#5927)

[skip ci]
Bumps [@npmcli/arborist](https://github.com/npm/cli/tree/HEAD/workspaces/arborist) from 9.1.6 to 9.1.8.
- [Release notes](https://github.com/npm/cli/releases)
- [Changelog](https://github.com/npm/cli/blob/latest/workspaces/arborist/CHANGELOG.md)
- [Commits](https://github.com/npm/cli/commits/arborist-v9.1.8/workspaces/arborist)

---
updated-dependencies:
- dependency-name: "@npmcli/arborist"
  dependency-version: 9.1.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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