Brave 5.18

Brave 5.18 prepares for Brave 6 by deprecating instrumentation for libraries not released in 1.5-3.5 years including:

• context/rxjava2 - last released Feb 2021
  • replaced by RxJava3, but unlikely this module will be ported as it wasn't used widely.
• instrumentation/dubbo-rpc - (alibaba) last released Dec 2021
  • replaced by Apache Dubbo instrumentation/dubbo
• instrumentation/p6spy - last released July 2020
  • project dormant
• instrumentation/sparkjava - last released July 2022
  • project dormant

A minor change is we changed the artifact we use to test MySQL 8 to com.mysql:mysql-connector-j (instead of mysql:mysql-connector-java), to ensure we validate against current versions. Thanks @m1ngyuan for the help on this.

Full Changelog: https://github.com/openzipkin/brave/compare/5.17.1..5.18.1