Updates WAF for FRTIB Search Head

Users are hitting the rate limit

prod/aws-us-gov/mdr-prod-frtib/190-splunk-customer-searchhead/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/splunk_servers/customer_searchhead?ref=v3.0.6"
+  source = "git@github.xdr.accenturefederalcyber.com:mdr-engineering/xdr-terraform-modules.git//base/splunk_servers/customer_searchhead?ref=v3.1.4"
 }
 
 dependency "vpc" {