Bump protobufjs, firebase-admin, firebase-functions and @firebase/rules-unit-testing

Bumps [protobufjs](https://github.com/protobufjs/protobuf.js) to 7.5.8 and updates ancestor dependencies [protobufjs](https://github.com/protobufjs/protobuf.js), [firebase-admin](https://github.com/firebase/firebase-admin-node), [firebase-functions](https://github.com/firebase/firebase-functions) and [@firebase/rules-unit-testing](https://github.com/firebase/firebase-js-sdk/tree/HEAD/packages/rules-unit-testing). These dependencies need to be updated together.


Updates `protobufjs` from 7.2.4 to 7.5.8
- [Release notes](https://github.com/protobufjs/protobuf.js/releases)
- [Changelog](https://github.com/protobufjs/protobuf.js/blob/protobufjs-v7.5.8/CHANGELOG.md)
- [Commits](protobufjs/protobuf.js@protobufjs-v7.2.4...protobufjs-v7.5.8)

Updates `firebase-admin` from 11.9.0 to 13.9.0
- [Release notes](https://github.com/firebase/firebase-admin-node/releases)
- [Changelog](https://github.com/firebase/firebase-admin-node/blob/main/CHANGELOG.md)
- [Commits](firebase/firebase-admin-node@v11.9.0...v13.9.0)

Updates `firebase-functions` from 3.24.1 to 7.2.5
- [Release notes](https://github.com/firebase/firebase-functions/releases)
- [Commits](firebase/firebase-functions@v3.24.1...v7.2.5)

Updates `@firebase/rules-unit-testing` from 2.0.7 to 5.0.1
- [Release notes](https://github.com/firebase/firebase-js-sdk/releases)
- [Changelog](https://github.com/firebase/firebase-js-sdk/blob/main/packages/rules-unit-testing/CHANGELOG.md)
- [Commits](https://github.com/firebase/firebase-js-sdk/commits/@firebase/rules-unit-testing@5.0.1/packages/rules-unit-testing)

---
updated-dependencies:
- dependency-name: protobufjs
  dependency-version: 7.5.8
  dependency-type: indirect
- dependency-name: firebase-admin
  dependency-version: 13.9.0
  dependency-type: direct:production
- dependency-name: firebase-functions
  dependency-version: 7.2.5
  dependency-type: direct:production
- dependency-name: "@firebase/rules-unit-testing"
  dependency-version: 5.0.1
  dependency-type: direct:development
...

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Author: dependabot[bot]