Bump firebase-admin from 11.9.0 to 11.11.0 in /functions

Bumps [firebase-admin](https://github.com/firebase/firebase-admin-node) from 11.9.0 to 11.11.0.
- [Release notes](https://github.com/firebase/firebase-admin-node/releases)
- [Commits](firebase/firebase-admin-node@v11.9.0...v11.11.0)

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

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

Author: dependabot[bot]

functions/package-lock.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "@google-cloud/storage": "^7.0.1",
     "express": "^4.18.2",
-    "firebase-admin": "^11.9.0",
+    "firebase-admin": "^11.11.0",
     "firebase-functions": "^4.4.1",
     "moment": "^2.29.4",
     "node-fetch": "^3.3.2"