chore(ai): Update changelog per release

[daymxn]

Rachel updated the changelog wording before shipping to firesite, and she wanted the SDKs to update the wording in their SDK changelogs to match. This updates the relevant changelog entry (for limited-use tokens) to match.

I'm not familiar with how changelogs are formatted across multiple lines here, so I've just copy and pasted it per the spacing in the release notes.

[changeset-bot]

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Latest commit: 8d902d1

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[daymxn]

cc @hsubox76 @dlarocque since I don't have write perms and can't directly attach reviewers