Revert "Bump src/code.cloudfoundry.org/gorouter"
Revert "Bump src/code.cloudfoundry.org/gorouter"

This reverts commit c0cc507397808e2ea53b63ca9703551fefc6da85.

cloudfoundry-incubator/cf-routing-release,cloudfoundry-incubator/cf-routing-release,cloudfoundry-incubator/cf-routing-release