Bump googleapis-common-protos from 1.5.5 to 1.5.6 (#5291)
Bump googleapis-common-protos from 1.5.5 to 1.5.6 (#5291)

Bumps [googleapis-common-protos](https://github.com/googleapis/googleapis) from 1.5.5 to 1.5.6.
- [Release notes](https://github.com/googleapis/googleapis/releases)
- [Commits](https://github.com/googleapis/googleapis/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
pypa/warehouse,pypa/warehouse,pypa/warehouse,pypa/warehouse