Zipkin 3.4.2 is a maintenance release, updating dependency versions to prevent problems such as bugs or CVEs.

Notable library updates:

• Update Spring Boot (address CVEs) and few other dependencies by @reta in https://github.com/openzipkin/zipkin/pull/3778
• Update Spring / Netty /Micrometer related dependencies by @reta in https://github.com/openzipkin/zipkin/pull/3779
• Routine dependency updates by @reta in https://github.com/openzipkin/zipkin/pull/3780

Full Changelog: https://github.com/openzipkin/zipkin/compare/3.4.1...3.4.2