Bump firebase from 8.2.4 to 10.9.0

Bumps [firebase](https://github.com/firebase/firebase-js-sdk) from 8.2.4 to 10.9.0.
- [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@8.2.4...firebase@10.9.0)

---
updated-dependencies:
- dependency-name: firebase
  dependency-version: 10.9.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

functions/package.json

@@ -15,7 +15,7 @@
     "dateformat": "^3.0.3",
     "deepmerge": "^4.2.2",
     "express": "^4.17.1",
-    "firebase": "^8.2.4",
+    "firebase": "^10.9.0",
     "firebase-admin": "^9.4.2",
     "firebase-functions": "^3.6.2",
     "firebase-tools": "^8.4.1",