Add changelog entry for AI Assistant

[JorgeBarriosF5]

Proposed changes

Adds a changelog entry for the AI Assistant.

Closes #ISSUE

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[github-actions]

✅ All required contributors have signed the F5 CLA for this PR. Thank you!
_{Posted by the CLA Assistant Lite bot.}

[JorgeBarriosF5]

I have hereby read the F5 CLA and agree to its terms

[JorgeBarriosF5]

recheck

[mjang]

Approving with comments.