fix: use retry_async instead of retry in async client (#1044)

* chore: Update gapic-generator-python to v1.12.0

PiperOrigin-RevId: 586356061

Source-Link: googleapis/googleapis@72a1f55

Source-Link: googleapis/googleapis-gen@558a04b
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* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* chore: Update gapic-generator-python to v1.13.0

PiperOrigin-RevId: 586460538

Source-Link: googleapis/googleapis@44582d0

Source-Link: googleapis/googleapis-gen@5e7073c
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* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* feat: added Generator API
docs: updated doc for speech mode

PiperOrigin-RevId: 586469693

Source-Link: googleapis/googleapis@e8148d6

Source-Link: googleapis/googleapis-gen@85136bd
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Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>