5.69.0
(feat): Add an api.settings.auto-generate-idempotency-key option in generators.yml that applies
idempotency-key auto-generation to every generator in the API, so it no longer has to be set
on each generator’s config. A generator’s own config.auto-generate-idempotency-key still
overrides the API-level value. Accepts the same boolean shorthand or header-name / methods
object form, and is resolved into the IR (SdkConfig.idempotencyKeyGeneration) as before.