Bump google-cloud-core from 1.2.6 to 1.2.7
Bump google-cloud-core from 1.2.6 to 1.2.7

Bumps [google-cloud-core](https://github.com/googleapis/google-cloud-ruby) from 1.2.6 to 1.2.7.
- [Release notes](https://github.com/googleapis/google-cloud-ruby/releases)
- [Commits](https://github.com/googleapis/google-cloud-ruby/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
coreyja/package-tracker,coreyja/package-tracker,coreyja/package-tracker