bump atc
bump atc

Submodule src/github.com/concourse/atc c2f40c0..c0001cb:
  > woops, only animate started jobs
  > invert running build colors

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