Bump @platformatic/kafka version

[kjamrog]

Summary

Bumps @platformatic/kafka to ^2.3.1 (and Node engine to >= 22.22.0).

Topics deletion fix

@platformatic/kafka 2.3.x has a regression in Admin#deleteTopics: on the error path it bypasses the deduplication callback, leaving a stale entry in the per-instance dedup cache. Reusing the same Admin afterwards causes subsequent deleteTopics calls for the same topics to hang forever.

This broke the init - close tests, which share a singleton kafkaAdmin and delete the same topics in beforeEach: the first delete (topics don't exist yet) errors and pollutes the cache, so every later delete times out. Tests passed individually but failed when run together.

Workaround: a shared deleteExistingTopics test helper lists topics first and only deletes the ones that exist, avoiding the broken error path. The upstream fix is being pushed separately.

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[kjamrog]

To be compatible with @platformatic/kafka requirement

[kjamrog]

It should be a simple fix for @platformatic/kafka, I will create PR for it. Since we only use topics deletion in tests and the workaround is clean (checking existing topics before deletion makes sense), it should be fine to proceed with the version upgrade

[kjamrog]

PR for the library: platformatic/kafka#323