fix(benchmarks): regenerate Harbor uv.lock against public PyPI

Both Harbor benchmark lockfiles pinned package sources and artifact URLs to
Block's internal Artifactory mirror (global.block-artifacts.com) — 1,589
references in harbor-buzz-orchestra/uv.lock and 1,645 in testbed/uv.lock —
captured from a developer-global uv config at generation time. Neither
pyproject.toml configures that index, so public clones can't resolve these
lockfiles (#2226).

Regenerated both against public PyPI (UV_INDEX_URL=https://pypi.org/simple);
all sources now resolve to pypi.org / files.pythonhosted.org with zero
block-artifacts references. Dependency versions are unchanged — only the
resolver index/URLs. `uv lock --check` passes for both.

Refs #2226

Signed-off-by: Bartok9 <danielrpike9@gmail.com>

Author: Bartok9