changelog for v9.0.0 (#2943)
changelog for v9.0.0 (#2943)

* Update CHANGELOG.md

* Update CHANGELOG.md

Co-authored-by: Michael Bleigh <95d057e795e894abaa4ba007b29a803f0b8385c5@google.com>

Co-authored-by: Michael Bleigh <95d057e795e894abaa4ba007b29a803f0b8385c5@google.com>
firebase/firebase-tools,firebase/firebase-tools,firebase/firebase-tools,firebase/firebase-tools,firebase/firebase-tools