Feature request: KMS encryption filter and action for SNS topics

Feature request: KMS encryption filter and action for SNS topics: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). SNS now supports server-side encryption with KMS, and I'd like to manage it with Cloud Custodian, but the SNS resource doesn't seem to expose anything…