infra/azure-peerpods: default to westeurope

GPU instances (which are the only ones we provide a working image for at the moment) are unavailable in germanywestcentral. Therefore, default to a GPU-enabled region here. This should not have any disadvantages compared to germanywestcentral for non-GPU use.

infra/azure-peerpods/main.tf

@@ -42,7 +42,7 @@ data "azurerm_resource_group" "rg_podvm_image" {
 
 resource "azurerm_resource_group" "rg" {
   name     = local.name
-  location = "germanywestcentral"
+  location = "westeurope"
 }
 
 resource "azuread_application" "app" {