staging-rke2: Increase worker nodes' cores to 6

proxmox/terraform/staging/cluster-archive-staging-rke2.tf

@@ -124,7 +124,7 @@ module "rancher-node-staging-rke2-worker1" {
   hostname    = "rancher-node-staging-rke2-worker1"
   description = "elastic worker for rpc services (e.g. graphql, ...)"
   sockets     = "1"
-  cores       = "4"
+  cores       = "6"
   memory      = "32768"
   balloon     = "16384"
 
@@ -166,7 +166,7 @@ module "rancher-node-staging-rke2-worker2" {
   hostname    = "rancher-node-staging-rke2-worker2"
   description = "elastic worker for computations (e.g. loader, lister, ...)"
   sockets     = "1"
-  cores       = "4"
+  cores       = "6"
   memory      = "32768"
   balloon     = "16384"
 
@@ -208,7 +208,7 @@ module "rancher-node-staging-rke2-worker3" {
   hostname    = "rancher-node-staging-rke2-worker3"
   description = "elastic worker for computations (e.g. loader, lister, ...)"
   sockets     = "1"
-  cores       = "4"
+  cores       = "6"
   memory      = "32768"
   balloon     = "16384"
 
@@ -250,7 +250,7 @@ module "rancher-node-staging-rke2-worker4" {
   hostname    = "rancher-node-staging-rke2-worker4"
   description = "elastic worker for computations (e.g. loader, lister, ...)"
   sockets     = "1"
-  cores       = "4"
+  cores       = "6"
   memory      = "32768"
   balloon     = "16384"