Zipkin 3.3.1 is a maintenance release that notably updates to Spring Boot 3.3 and Alpine Linux 3.20.
This also adds the test docker image ghcr.io/openzipkin/zipkin-opensearch2, which is used to test the upcoming Zipkin 3.4 release which will support OpenSearch 2 in addition to existing storage backends.
Notable thanks to @reta on this release!