### Describe the feature Cfn Index is available now: https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_opensearchserverless.CfnIndex.html Added in this commit: https://github.com/aws/aws-cdk/commit/c4fceb2f28b9582cd957040a2c9e983343b9eba9 We should use this instead of current implementation through a custom resource ### Use Case Remove custom resource ### Proposed Solution _No response_ ### Other Information _No response_ ### Acknowledgements - [ ] I may be able to implement this feature request - [ ] This feature might incur a breaking change