Add support for firebase-admin v13 (#1641)

* Change firebase-admin peer dep to support any major versions starting from 11.

* Bump firebase-admin to 13.

* Add support for firebase admin sdk v13.

* Add changelog.

Author: taeold

CHANGELOG.md

@@ -1,2 +1,3 @@
 - Fix bug where wrapInit wasn't called on v2 callable functions. (#1634)
 - Add support for callable function to return streaming response (#1629)
+- Add support for firebase-admin@13 (#1641)