Bump undici and firebase

Bumps [undici](https://github.com/nodejs/undici) to 6.19.7 and updates ancestor dependency [firebase](https://github.com/firebase/firebase-js-sdk). These dependencies need to be updated together.


Updates `undici` from 5.28.3 to 6.19.7
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.28.3...v6.19.7)

Updates `firebase` from 10.9.0 to 10.14.1
- [Release notes](https://github.com/firebase/firebase-js-sdk/releases)
- [Changelog](https://github.com/firebase/firebase-js-sdk/blob/main/CHANGELOG.md)
- [Commits](https://github.com/firebase/firebase-js-sdk/compare/firebase@10.9.0...firebase@10.14.1)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: indirect
- dependency-name: firebase
  dependency-type: direct:production
...

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