update-otel-genai-conventions

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (medium risk: 0.30). The workflow monitors GitHub PRs, issues, commits, and releases from the open-telemetry/semantic-conventions-genai and open-telemetry/semantic-conventions repositories, allowing outsiders to submit untrusted text via PR bodies, commit messages, and changelog fragments.