Bump hashicorp/google from 6.7.0 to 6.8.0

Bumps [hashicorp/google](https://github.com/hashicorp/terraform-provider-google) from 6.7.0 to 6.8.0.
- [Release notes](https://github.com/hashicorp/terraform-provider-google/releases)
- [Changelog](https://github.com/hashicorp/terraform-provider-google/blob/main/CHANGELOG.md)
- [Commits](hashicorp/terraform-provider-google@v6.7.0...v6.8.0)

---
updated-dependencies:
- dependency-name: hashicorp/google
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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