Resolve "Upgrade to a version of gcp-site-monitoring running a supported version of Python"

Part of #58 (closed)

main.tf

@@ -264,7 +264,7 @@ module "uptime_monitoring" {
   for_each = local.monitor_hosts
 
   source  = "gitlab.developers.cam.ac.uk/uis/gcp-site-monitoring/devops"
-  version = "~> 3.2"
+  version = "~> 5.0"
 
   host                        = each.value.host
   project                     = var.project