fix: Correct DNS suffix for OIDC provider (#2026)

Co-authored-by: Xin Chen <[email protected]>
Co-authored-by: Bryant Biggs <[email protected]>

main.tf

@@ -174,7 +174,7 @@ data "tls_certificate" "this" {
 resource "aws_iam_openid_connect_provider" "oidc_provider" {
   count = local.create && var.enable_irsa ? 1 : 0
 
-  client_id_list  = distinct(compact(concat(["sts.${data.aws_partition.current.dns_suffix}"], var.openid_connect_audiences)))
+  client_id_list  = distinct(compact(concat(["sts.${local.dns_suffix}"], var.openid_connect_audiences)))
   thumbprint_list = concat([data.tls_certificate.this[0].certificates[0].sha1_fingerprint], var.custom_oidc_thumbprints)
   url             = aws_eks_cluster.this[0].identity[0].oidc[0].issuer