chore(deps): update openai-go to v3.64.0

[openai-sdks]

Updates github.com/openai/openai-go/v3 to v3.64.0.

This pull request is maintained by the hourly openai-go updater.

[github-actions]

Castiron custom code

✅ No new custom-code files detected.

5 mixed files remain; 0 existing customizations changed.

Compared eb415e53c0df → 65a13ab8d974. Generated baselines verified.

5 existing customizations unchanged

• pkg/cmd/adminorganizationcertificate.go
• pkg/cmd/cmd.go
• scripts/castiron/README.md
• scripts/castiron/custom_code_report.py
• scripts/castiron/test_custom_code_report.py

A changed generated baseline means this report cannot reliably identify which handwritten lines changed.

Inspect the custom-code diff

Download the exact patch produced by this run (requires repository access):

gh run download 35491703023 --repo openai/openai-cli \
  --name castiron-custom-code-35491703023-1 --dir /tmp/castiron-custom-code-35491703023-1
git apply --stat /tmp/castiron-custom-code-35491703023-1/custom-code.patch
cat /tmp/castiron-custom-code-35491703023-1/custom-code.patch

Or reproduce it from an SDK checkout containing the vendored reporter:

git fetch --no-tags origin eb415e53c0dff9f31a43da13e21056722ed85b97 65a13ab8d9747a2b666b12b1ae62d329a2f5da49
python3 scripts/castiron/custom_code_report.py report \
  --base eb415e53c0dff9f31a43da13e21056722ed85b97 \
  --head 65a13ab8d9747a2b666b12b1ae62d329a2f5da49 --fetch --require-head-hash --public \
  --out /tmp/castiron-custom-code-65a13ab8d974
cat /tmp/castiron-custom-code-65a13ab8d974/custom-code.patch

This is the current full custom patch for mixed files, not an attribution of only the handwritten lines changed by this PR.

Full report and patch