Remove empty strings from iam bucket list

main.tf

@@ -319,7 +319,7 @@ module "iam" {
   aws_primary_dns_role_arn   = var.aws_primary_dns_role_arn
   efs_filesystem_id          = [var.include_efs == true ? module.efs-storage[0].efs_filesystem_id : ""]
   fsx_arns                   = [var.include_rox ? module.fsx-storage[0].fsx-rox.arn : "", var.include_fsx == true ? module.fsx-storage[0].fsx-rwx.arn : ""]
-  s3_buckets                 = [module.s3-storage.data_s3_bucket_name, var.include_pgbackup ? module.s3-storage.pgbackup_s3_bucket_name : "", var.include_rox ? module.s3-storage.api_models_s3_bucket_name : "", lower("${var.aws_account}-aws-cod-snapshots"), var.performance_bucket ? "indico-locust-benchmark-test-results" : ""]
+  s3_buckets                 = compact([module.s3-storage.data_s3_bucket_name, var.include_pgbackup ? module.s3-storage.pgbackup_s3_bucket_name : "", var.include_rox ? module.s3-storage.api_models_s3_bucket_name : "", lower("${var.aws_account}-aws-cod-snapshots"), var.performance_bucket ? "indico-locust-benchmark-test-results" : ""])
   kms_key_arn                = module.kms_key.key_arn
   # s3 replication
   enable_s3_replication                            = var.enable_s3_replication