bump baggageclaim
bump baggageclaim

[finishes #127273489]

Submodule src/github.com/concourse/baggageclaim a97b131..f934823:
  > corrupt volumes are destroyed by the reaper
  > Merge pull request #5 from thokari/master

Signed-off-by: Clara Fu <d5c8bdbc15689555c92563892e959c79b3fc425f@pivotal.io>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse