Update ResetLimitFunctionRole prod permissions

[MehulKChaudhari]

Issue Description

We are adding a feature to change the API limit. programmatically and once the limit is updated we are again starting the Lambda's. For that, we need set the reversed concurrency to unreserved.

permission changes

1. Visit this policy Lambdas-PutFunctionConcurrency-all-ffb-lamdas
   and edit it to as below to add a permission to delete the concurrency of lambda's. and attach this policy to new lambda ResetLimitFunction role

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action": [
                "lambda:PutFunctionConcurrency",
                "lambda:DeleteFunctionConcurrency"
            ],
            "Resource": "arn:aws:lambda:ap-south-1:181388287005:function:FeatureFlagBackendProd*"
        }
    ]
}

We are deleting the reserved concurrency which is set to 0 so that the lambda's don't serve any requests after that in order to make the lambda's working again we need delete the concurrency so by default it becomes unreserved. for that we need a remission lambda:DeleteFunctionConcurrency

3. Also add this policy dynamodb-get-put-item to new lambda ResetLimitFunction role