Log Message:
www/ruby-aws-sdk-kms: update to 1.60.0

1.60.0 (2022-11-29)

* Feature - AWS KMS introduces the External Key Store (XKS), a new feature
  for customers who want to protect their data with encryption keys stored
  in an external key management system under their control.

1.59.0 (2022-10-25)

* Feature - Code Generated Changes, see ./build_tools or aws-sdk-core's
  CHANGELOG.md for details.