[codex] Bump urllib3 example dependency

[stacknil]

Brief Design Summary

This PR applies the Dependabot urllib3 example dependency bump from 2.2.1 to 2.7.0 for sbom-diff-and-risk example requirements.

It also regenerates the matching deterministic sample requirements JSON and Markdown reports so the golden tests stay aligned with the example input. This supersedes Dependabot PR #54, which changed only the input file and left the sample report golden outputs stale.

No runtime behavior, package metadata, workflows, release tags, PyPI/TestPyPI publishing, or production PyPI status changed.

Files Changed

• tools/sbom-diff-and-risk/examples/requirements_after.txt
• tools/sbom-diff-and-risk/examples/sample-requirements-report.json
• tools/sbom-diff-and-risk/examples/sample-requirements-report.md

Validation

cd tools/sbom-diff-and-risk
python -m pytest
python -m build
$files = Get-ChildItem dist -File | ForEach-Object { $_.FullName }
python -m twine check $files
git diff --check

Results:

• python -m pytest: 162 passed
• python -m build: passed, produced sbom_diff_and_risk-0.9.0 wheel and sdist
• python -m twine check: passed for wheel and sdist
• git diff --check: passed
• package version remains 0.9.0
• .github/workflows unchanged

Out of Scope

• No runtime behavior changes
• No package version bump
• No workflow changes
• No tag or GitHub Release
• No PyPI/TestPyPI publishing
• No production PyPI workflow