[chore] Release 9.1.0 (firebase#991)

[chore] Release 9.0.0 (firebase#946)

[chore] Release 8.13.0 (firebase#925)

[chore] Release 8.12.1 (firebase#883)

[chore] Release 8.12.0 (firebase#878)

[chore] Release 8.11.0 (firebase#861)

Release 8.11.0

[chore] Release 8.10.0 (take 2) (firebase#812)

Bumped version to 8.9.2 (firebase#772)

Bumped version to 8.9.1 (firebase#761)

Bumped version to 8.9.0 (firebase#737)