eventbridge-lambda-terraform: Fix deprecated managed_policy_arns argument

Author: kakakakakku

eventbridge-lambda-terraform/main.tf

@@ -35,7 +35,6 @@ data "aws_iam_policy" "lambda_basic_execution_role_policy" {
 
 resource "aws_iam_role" "lambda_iam_role" {
   name_prefix         = "EventBridgeLambdaRole-"
-  managed_policy_arns = [data.aws_iam_policy.lambda_basic_execution_role_policy.arn]
 
   assume_role_policy = <<EOF
 {
@@ -54,6 +53,11 @@ resource "aws_iam_role" "lambda_iam_role" {
 EOF
 }
 
+resource "aws_iam_role_policy_attachment" "lambda_basic_execution" {
+  role       = aws_iam_role.lambda_iam_role.name
+  policy_arn = data.aws_iam_policy.lambda_basic_execution_role_policy.arn
+}
+
 resource "aws_cloudwatch_event_rule" "event_rule" {
 	name_prefix = "eventbridge-lambda-"
   event_pattern = <<EOF