fix(iam): enforce the bucket/object resource boundary

Upgrade directly to silo-pkg v3.11.0, the fork's first non-colliding release, and carry the completed minio/minio#20449 hardening without exposing the retired v3.7.0, v3.8.0, or v3.8.1 tags in the rewritten history.

Twelve sensitive bucket-level writes now require the bare bucket resource in addition to the historical bucket/ form, so an object-only bucket/* grant cannot delete a bucket or change protections. Read/list behavior, ordinary tenant self-service, Deny statements, and NotResource exclusions retain their compatible behavior; MINIO_API_LEGACY_BUCKET_RESOURCE_MATCH restores the old matcher when migration requires it.

End-to-end tests cover direct clients, session policies, service accounts, wildcard edge cases, compatible resource pairs, and real bucket deletion.

Co-authored-by: ChatGPT <noreply@openai.com>
Co-authored-by: Claude <noreply@anthropic.com>

go.sum

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