build(deps): bump firebase-functions from 4.4.1 to 4.7.0 in /functions

Bumps [firebase-functions](https://github.com/firebase/firebase-functions) from 4.4.1 to 4.7.0.
- [Release notes](https://github.com/firebase/firebase-functions/releases)
- [Changelog](https://github.com/firebase/firebase-functions/blob/master/tsconfig.release.json)
- [Commits](firebase/firebase-functions@v4.4.1...v4.7.0)

---
updated-dependencies:
- dependency-name: firebase-functions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

functions/package.json

@@ -22,7 +22,7 @@
     "@google-cloud/storage": "^6.2.2",
     "express": "^4.18.1",
     "firebase-admin": "^11.0.0",
-    "firebase-functions": "^4.4.1",
+    "firebase-functions": "^4.7.0",
     "moment": "^2.29.3",
     "node-fetch": "^3.2.4"
   },