eval_cli: Update eval_cli toolchain and pin harbor (#55768)

Move `git_ui` to `agent_ui` test dependencies
and bump the eval CLI Docker image to Rust 1.95.0 while pinning
the Python `harbor` dependency to 0.6.4

Release Notes:

- N/A
7a34bc059eBen Brandt committed on 5/5/2026, 1:40:58 PM· committed by GitHubparenta2cd962
4 files changedLine totals unavailable