chore(deps): bump grpcio from 1.46.3 to 1.47.0
chore(deps): bump grpcio from 1.46.3 to 1.47.0

Bumps [grpcio](https://github.com/grpc/grpc) from 1.46.3 to 1.47.0.
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](https://github.com/grpc/grpc/compare/v1.46.3...v1.47.0)

---
updated-dependencies:
- dependency-name: grpcio
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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