Use JSON-B instead of an hardcoded Jackson

[kennknowles]

Currently beam uses jackson directly everywhere, it either messes up environments where another version is here and can't be upgraded or it forces to shade and have a fat app where it is not needed. Using JSON-B will allow to switch the impl and beam will just rely on ~200k of API instead of megs of dependencies making it smoother to integrated in all environments.

Imported from Jira BEAM-3992. Original Jira may contain additional context.
Reported by: romain.manni-bucau.

[Abacn]

This Issue is marked as Beam 3 - Milestone 1: No Code and ML focus. Please help us burning down the open blocker tasks.

• If this issue is solved, close it. If it is obsolete, close as not planned. If it is no longer necessary for Beam 3, move it out of the Milestone.

• If the work is pending, please be reminded that Milestone 1 is targeted for completion by Dec 30, 2025

• If this issue involves multiple milestones (e.g. remove a public API should first mark it as deprecated, scoped in Milestone 1; then finally remove it in Beam 3 release candidate, scoped in Milestone 3) and Milestone 1 portion has completed, consider move the Issue to Milestone 3.

[Abacn]

An earlier concern of jackson databind was its history of vulnerabilities. This has been improved recently (after 2023). Also many Beam's popular dependencies still depend on jackson.

As Beam 3 - Milestone 1 ddl nears and no active work on this issue, move this off the milestone