Integ: Test DynamoDb Contributor Insights for GSI

[so0k]

Add integ tests for

• feat(aws/storage): Support Contributor Insights config per DynamoDB global secondary index #84

Ref: https://github.com/aws/aws-cdk/blob/v2.176.0/packages/%40aws-cdk-testing/framework-integ/test/aws-dynamodb/test/integ.dynamodb.contirubtor-insights-for-gsi.ts