build: bump firebase-tools from 9.5.0 to 9.6.1

Bumps [firebase-tools](https://github.com/firebase/firebase-tools) from 9.5.0 to 9.6.1.
- [Release notes](https://github.com/firebase/firebase-tools/releases)
- [Commits](firebase/firebase-tools@v9.5.0...v9.6.1)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]