This commit adds the information about metrics update to the 5.2-to-5.4 upgrade guide. Fixes https://github.com/scylladb/scylladb/issues/15966 Closes scylladb/scylladb#16161
This commit adds the information about metrics update to the 5.2-to-5.4 upgrade guide. Fixes https://github.com/scylladb/scylladb/issues/15966 Closes scylladb/scylladb#16161