Bump @firebase/util and firebase

Bumps [@firebase/util](https://github.com/firebase/firebase-js-sdk/tree/HEAD/packages/util) to 1.9.3 and updates ancestor dependency [firebase](https://github.com/firebase/firebase-js-sdk). These dependencies need to be updated together.


Updates `@firebase/util` from 0.2.48 to 1.9.3
- [Release notes](https://github.com/firebase/firebase-js-sdk/releases)
- [Changelog](https://github.com/firebase/firebase-js-sdk/blob/master/packages/util/CHANGELOG.md)
- [Commits](https://github.com/firebase/firebase-js-sdk/commits/@firebase/[email protected]/packages/util)

Updates `firebase` from 7.15.1 to 9.18.0
- [Release notes](https://github.com/firebase/firebase-js-sdk/releases)
- [Changelog](https://github.com/firebase/firebase-js-sdk/blob/master/CHANGELOG.md)
- [Commits](https://github.com/firebase/firebase-js-sdk/compare/[email protected]@9.18.0)

---
updated-dependencies:
- dependency-name: "@firebase/util"
  dependency-type: indirect
- dependency-name: firebase
  dependency-type: direct:production
...

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