fix: disable tls1.3
fix: disable tls1.3

- Java apps have experienced errors communicating to GoRouter using TLS1.3, we are investigating

[#169847484](https://www.pivotaltracker.com/story/show/169847484)

Co-authored-by: Aidan Obley <2667fa8e8663c9d9f622cbe0896041b5635a919f@pivotal.io>

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