Bump protobufjs and firebase-admin in /firebase/functions (#265)

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

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

* Update firebase-functions@5

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Dao Hoang Son <[email protected]>

Author: dependabot[bot]