Update Gitaly version to v0.35.0

Why was this MR needed?

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/36972

Closes https://gitlab.com/gitlab-org/gitaly/issues/486

This version of Gitaly contains a fix for CommitsByMessage RPC which was migrated to in 9.5.

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests added for this feature/bug
• Review
  • Has been reviewed by UX
  • Has been reviewed by Frontend
  • Has been reviewed by Backend
  • Has been reviewed by Database
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together

What are the relevant issue numbers?