Expiring service account API keys

ElevenLabs workspace service account API keys can now expire. Set expires_at_unix when creating or updating a key, or choose an Expire after value in the dashboard. The key stops working when that time passes.

Expiry must be between 15 minutes and 90 days in the future. Omit the field for a key that never expires. Service accounts are available only to multi-seat customers, and only workspace admins can use the feature.