Epic: T350495: [EPIC] Deploy latest version of Metrics Platform client libraries
Background
In T346287, T346288, and T346286, we updated the JS, Java, and PHP client libraries to produce core interaction events. Before they can be used by us and, eventually, by third-parties, they must be deployed.
AC
- The latest version of the PHP client library is integrated into EventLogging
- The latest version of the PHP client library is merged into mediawiki/vendor
- The above are all tested end to end
- Deployment processes are documented on Wikitech