Bump @tootallnate/once and firebase-tools

Bumps [@tootallnate/once](https://github.com/TooTallNate/once) to 2.0.1 and updates ancestor dependency [firebase-tools](https://github.com/firebase/firebase-tools). These dependencies need to be updated together.


Updates `@tootallnate/once` from 2.0.0 to 2.0.1
- [Release notes](https://github.com/TooTallNate/once/releases)
- [Changelog](https://github.com/TooTallNate/once/blob/v2.0.1/CHANGELOG.md)
- [Commits](TooTallNate/once@2.0.0...v2.0.1)

Updates `firebase-tools` from 9.19.0 to 15.18.0
- [Release notes](https://github.com/firebase/firebase-tools/releases)
- [Commits](firebase/firebase-tools@v9.19.0...v15.18.0)

---
updated-dependencies:
- dependency-name: "@tootallnate/once"
  dependency-version: 2.0.1
  dependency-type: indirect
- dependency-name: firebase-tools
  dependency-version: 15.18.0
  dependency-type: direct:development
...

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Author: dependabot[bot]