bump go-db-helpers
bump go-db-helpers

[#144803733]

Submodule src/code.cloudfoundry.org/go-db-helpers 351c40f..45d4521:
  > Add timeout fields for DBConnectionInfo, used for mysql
  > Add port method to fake metron

Signed-off-by: Joachim Valdez <f4115f6bcd6858c277581a1d9da83b9914dce2c3@us.ibm.com>

cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release