Features:
- kmstool-enclave: allow endpoint configuration
- kms: add host_name override for endpoint.
- rest: add user-agent string
Fixes:
- kms: allow unknown fields in KMS response
Updates:
- update aws-nitro-enclaves-nsm-api
- containers: update rust version
- update dependencies
- deps: update aws-lc to v1.0.2
Docs:
- Add "Security Issue Notifications" section to README