AWS Lambda durable functions increases durable operation and checkpoint payload limits

Summary

• Durable functions now allow up to 30,000 operations per execution (up from 3,000).
• Checkpoint payload size increased to 1 MB (up from 256 KB), matching async Lambda and integration limits.
• SDKs add a FileSystem serializer to offload payloads >1 MB to EFS or S3 and checkpoint a pointer.