Micronaut framework 5 with Jackson 3

Micronaut Framework 5 upgrades its Jackson Databind module from Jackson 2 to Jackson 3. The post details the package namespace changes required (from com.fasterxml.jackson to tools.jackson), exception class renames, and internal Micronaut class relocations. It also shows how to automate the migration using the OpenRewrite Jackson 2-to-3 recipe with Gradle.