chore: add Sentinel Forwarder lambda outputs (#1281)

Add outputs for the Sentinel Forwarder Lambda function's ARN and name.
These will be used by other modules to process CloudWatch logs with
the same function.

aws/eks/outputs.tf

@@ -89,3 +89,12 @@ output "karpenter_instance_profile" {
 output "quicksight_security_group_id" {
   value = aws_security_group.quicksight.id
 }
+
+# Sentinel
+output "sentinel_forwarder_cloudwatch_lambda_arn" {
+  value = length(module.sentinel_forwarder) != 0 ? module.sentinel_forwarder[0].lambda_arn : null
+}
+
+output "sentinel_forwarder_cloudwatch_lambda_name" {
+  value = length(module.sentinel_forwarder) != 0 ? module.sentinel_forwarder[0].lambda_name : null
+}

aws/eks/sentinel.tf

@@ -9,7 +9,7 @@ locals {
 # and https://docs.google.com/document/d/16LLelZ7WEKrnbocrl0Az74JqkCv5DBZ9QILRBUFJQt8/edit#heading=h.z87ipkd84djw
 module "sentinel_forwarder" {
   count             = var.enable_sentinel_forwarding ? 1 : 0
-  source            = "github.com/cds-snc/terraform-modules//sentinel_forwarder?ref=v9.3.8"
+  source            = "github.com/cds-snc/terraform-modules//sentinel_forwarder?ref=v9.4.2"
   function_name     = "sentinel-cloud-watch-forwarder"
   billing_tag_value = "notification-canada-ca-${var.env}"