Bump node-forge and firebase-tools

Bumps [node-forge](https://github.com/digitalbazaar/forge) to 1.4.0 and updates ancestor dependency [firebase-tools](https://github.com/firebase/firebase-tools). These dependencies need to be updated together.


Updates `node-forge` from 1.3.1 to 1.4.0
- [Changelog](https://github.com/digitalbazaar/forge/blob/main/CHANGELOG.md)
- [Commits](digitalbazaar/forge@v1.3.1...v1.4.0)

Updates `firebase-tools` from 8.20.0 to 15.11.0
- [Release notes](https://github.com/firebase/firebase-tools/releases)
- [Changelog](https://github.com/firebase/firebase-tools/blob/main/CHANGELOG.md)
- [Commits](firebase/firebase-tools@v8.20.0...v15.11.0)

---
updated-dependencies:
- dependency-name: node-forge
  dependency-version: 1.4.0
  dependency-type: indirect
- dependency-name: firebase-tools
  dependency-version: 15.11.0
  dependency-type: direct:development
...

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Author: dependabot[bot]