What's Changed
- bug: Support async sns/sqs message publishing v9 by @jtsalva in #3269
- feature: Backport #3270 by @jtsalva in #3272
- Implement a CombinedProducerRegistryFactory for using multiple message transports [v9] by @dhickie in #3273
Full Changelog: 9.9.3...9.9.4