Update Gitlab Shell version to 14.27.0

- Workaround to allow gitaly service to start
- Update module gitlab.com/gitlab-org/gitaly/v16 to v16.3.1
- Resolve "GitLab sshd should include data transfer bytes in logs"
- Update dependency golang to v1.21.0
- Log metadata refactor
- Support authentication using SSH Certificates
- Update module gitlab.com/gitlab-org/gitaly/v16 to v16.3.0
- Implement geo_proxy_direct_to_primary feature flag
- Update module gitlab.com/gitlab-org/gitaly/v16 to v16.2.4
- Update module gitlab.com/gitlab-org/gitaly/v16 to v16.2.2
- Add Go v1.21 to CI

Changelog: other