chore(deps-dev): bump @metamask/snaps-cli from 6.3.1 to 6.6.1

Bumps [@metamask/snaps-cli](https://github.com/MetaMask/snaps) from 6.3.1 to 6.6.1.
- [Release notes](https://github.com/MetaMask/snaps/releases)
- [Commits](https://github.com/MetaMask/snaps/compare/@metamask/[email protected]...@metamask/[email protected])

---
updated-dependencies:
- dependency-name: "@metamask/snaps-cli"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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