Bump protobufjs and firebase-admin

Bumps [protobufjs](https://github.com/protobufjs/protobuf.js) to 7.2.6 and updates ancestor dependency [firebase-admin](https://github.com/firebase/firebase-admin-node). These dependencies need to be updated together.


Updates `protobufjs` from 7.2.4 to 7.2.6
- [Release notes](https://github.com/protobufjs/protobuf.js/releases)
- [Changelog](https://github.com/protobufjs/protobuf.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/protobufjs/protobuf.js/compare/protobufjs-v7.2.4...protobufjs-v7.2.6)

Updates `firebase-admin` from 11.4.1 to 12.0.0
- [Release notes](https://github.com/firebase/firebase-admin-node/releases)
- [Commits](https://github.com/firebase/firebase-admin-node/compare/v11.4.1...v12.0.0)

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

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

package.json

@@ -20,7 +20,7 @@
   "dependencies": {
     "concurrently": "^5.3.0",
     "express": "^4.18.2",
-    "firebase-admin": "^11.4.1",
+    "firebase-admin": "^12.0.0",
     "helmet": "^3.23.3",
     "moment": "^2.29.4",
     "mongoose": "^5.13.20"