[codex] Reflow GitHub Actions consumer example Markdown

[stacknil]

Brief Design Summary

This PR reflows tools/sbom-diff-and-risk/docs/github-actions-consumer-example.md by breaking remaining long code-fence lines into readable multiline equivalents.

Meaning and examples are preserved. YAML, shell, and Python snippets remain valid and readable.

This is a docs formatting/hygiene follow-up only.

Files Changed

• tools/sbom-diff-and-risk/docs/github-actions-consumer-example.md

Validation

• git diff --check passed.
• Broad Unicode Cf/Cc scan on the touched file found no non-tab/newline control or format characters.
• Confirmed code fences remain paired.
• Confirmed max line length is 82.
• Confirmed package version remains 0.6.0.
• Confirmed .github/workflows/ unchanged.
• No Python tests run because this is docs formatting only.

Out of Scope

• No runtime behavior changes
• No CLI behavior changes
• No report schema changes
• No tests changes
• No examples changes
• No workflow changes
• No package metadata changes
• No release tag changes
• No publishing status changes