Terraform fix

Author: stevebux

infrastructure/terraform/components/api/module_lambda_letter_updates_transformer.tf

@@ -53,4 +53,22 @@ data "aws_iam_policy_document" "letter_updates_transformer_lambda" {
       module.eventpub.sns_topic.arn
     ]
   }
+
+    statement {
+    sid    = "AllowKinesisGet"
+    effect = "Allow"
+
+    actions = [
+      "kinesis:GetRecords",
+      "kinesis:GetShardIterator",
+      "kinesis:DescribeStream",
+      "kinesis:DescribeStreamSummary",
+      "kinesis:ListShards",
+      "kinesis:ListStreams",
+    ]
+
+    resources = [
+      aws_kinesis_stream.letter_change_stream.arn
+    ]
+  }
 }