Add explicit jNaCl dependency for ZeroMQ key verification

[krishnangovindraj]

What is the goal of this PR?

Add explicit dependency on jNaCl (a java libsodium port), used for key pair validation in ZeroMQ.

What are the changes implemented in this PR?

• Adds jNaCl to artifacts.bzl.

(jNaCl is used internally by zeromq, so it has always been a runtime dependency)

[typedb-bot]

PR Review Checklist

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Trivial Change

• [x] This change is trivial and does not require a code or architecture review.

Code

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