Fixes incorrect tag for teleport in prod

prod/aws-us-gov/mdr-prod-c2/090-instance-teleport/terragrunt.hcl

@@ -13,7 +13,7 @@ locals {
 # working directory, into a temporary folder, and execute your Terraform commands in that folder.
 terraform {
   # Double slash is intentional and required to show root of modules
-  source = "git@github.xdr.accenturefederalcyber.com:mdr-engineering/xdr-terraform-modules.git//base/teleport-single-instance?ref=v5.2.0"
+  source = "git@github.xdr.accenturefederalcyber.com:mdr-engineering/xdr-terraform-modules.git//base/teleport-single-instance?ref=v5.2.1"
 }
 
 dependency "vpc-system-services" {