bump ltc
bump ltc

Submodule src/github.com/cloudfoundry-incubator/ltc 9bd1f00..f37d613:
  > remove control characters when TERM is not set

[Finishes ##107482924]
Signed-off-by: Emily Casey <2c35f9c4cdfaa4fb4d9df91b23e294fe59051836@pivotal.io>

Signed-off-by: Emily Casey <2c35f9c4cdfaa4fb4d9df91b23e294fe59051836@pivotal.io>

pivotal-cf/micropcf,pivotal-cf/micropcf