Bump google-cloud-bigquery from 2.6.1 to 2.7.0 in /requirements (#16409)
Bump google-cloud-bigquery from 2.6.1 to 2.7.0 in /requirements (#16409)

Bumps [google-cloud-bigquery](https://github.com/googleapis/python-bigquery) from 2.6.1 to 2.7.0.
- [Release notes](https://github.com/googleapis/python-bigquery/releases)
- [Changelog](https://github.com/googleapis/python-bigquery/blob/master/CHANGELOG.md)
- [Commits](https://github.com/googleapis/python-bigquery/compare/v2.6.1...v2.7.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

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