Bump @types/npmcli__arborist from 5.6.6 to 5.6.9

Bumps [@types/npmcli__arborist](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/npmcli__arborist) from 5.6.6 to 5.6.9.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/npmcli__arborist)

---
updated-dependencies:
- dependency-name: "@types/npmcli__arborist"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]