bump baggageclaim
bump baggageclaim

Submodule src/github.com/concourse/baggageclaim 1874c63..f632d8c:
  > do not perform TRIM on mkfs

Signed-off-by: Toby Rumans <516e7840355d33b790e9dc5c111fe7c7c270a08f@pivotal.io>

cjcjameson/concourse,sedouard/concourse,zachgersh/concourse,jbayer/concourse,beni55/concourse,concourse/concourse,concourse/concourse,sedouard/concourse,squeedee/concourse,cjcjameson/concourse,concourse/concourse,CloudCredo/concourse,longnguyen11288/concourse,sedouard/concourse,Amit-PivotalLabs/concourse,holgero/concourse,CloudCredo/concourse,squeedee/concourse,CloudCredo/concourse,holgero/concourse,Amit-PivotalLabs/concourse,holgero/concourse,jbayer/concourse,longnguyen11288/concourse,cjcjameson/concourse,longnguyen11288/concourse,jbayer/concourse,beni55/concourse,concourse/concourse,zachgersh/concourse,beni55/concourse,squeedee/concourse,Amit-PivotalLabs/concourse,concourse/concourse,zachgersh/concourse