Create a dedicated Security Policy page (docs/{en,pt-BR,ko,ar}/security.mdx)
with vulnerability reporting instructions pointing to the Bugcrowd VDP
(crewai-vdp-ess@submit.bugcrowd.com), consistent with the updated security
policy from PR #5096.
The page is added to the Documentation tab navigation (after Telemetry)
across all versions and languages in docs.json.
This is a top-level security page, not buried inside MCP docs.
