Green -> 3 (was only 2 by accident)

main.tf

@@ -58,7 +58,7 @@ module "espd_green_runners" {
   source        = "git::https://code.ornl.gov/rse-terraform-modules/ornl-cloud-gitlab-runners//modules/ornl-cloud-gitlab-runners?ref=v0.24"
 
   prefix                = "espd-green"
-  runner_count          = 2
+  runner_count          = 3
   flavor                = var.flavor
   image_uuid            = var.image_uuid
   volume_size           = var.volume_size