Bump google-cloud-bigquery from 1.28.0 to 2.0.0 in /requirements (#15609)
Bump google-cloud-bigquery from 1.28.0 to 2.0.0 in /requirements (#15609)

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
Co-authored-by: William Durand <577613f88f338790c89bb5ac85e1a742d4a4344d@drnd.me>
diox/olympia,mozilla/olympia,mozilla/addons-server,mozilla/olympia,eviljeff/olympia,mozilla/addons-server,mozilla/addons-server,wagnerand/addons-server,diox/olympia,mozilla/olympia,wagnerand/addons-server,wagnerand/addons-server,bqbn/addons-server,bqbn/addons-server,mozilla/olympia,wagnerand/addons-server,bqbn/addons-server,eviljeff/olympia,diox/olympia,eviljeff/olympia,mozilla/addons-server,eviljeff/olympia,bqbn/addons-server,diox/olympia