bump locket
bump locket

[finishes #146071057]

Submodule src/code.cloudfoundry.org/locket 97411511..01b9c35a:
  > Fix the Lock handler (the most important handler) to exit on unrecoverable errors

cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release