Hooks: Use gitaly-hooks instead of bin/check

What does this MR do?

bin/check is supplied by GitLab-Shell, and Gitaly still uses that internally. To move away from it, GitLab will standardize on using gitaly-hooks instead, opening the porting to Go possibility.

Verified at gitaly!2620 (merged)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content