Update azure multicloud cluster versions (#5920) (#4209)

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/5920.txt

@@ -0,0 +1,2 @@
+```release-note:none
+```

google-beta/resource_container_azure_cluster_generated_test.go

@@ -140,7 +140,7 @@ resource "google_container_azure_cluster" "primary" {
     }
 
     subnet_id = "/subscriptions/%{azure_sub}/resourceGroups/%{byo_prefix}-dev-byo/providers/Microsoft.Network/virtualNetworks/%{byo_prefix}-dev-vnet/subnets/default"
-    version   = "1.21.5-gke.2800"
+    version   = "1.21.6-gke.1500"
 
     database_encryption {
       key_id = "/subscriptions/%{azure_sub}/resourceGroups/%{byo_prefix}-dev-cluster/providers/Microsoft.KeyVault/vaults/%{byo_prefix}-dev-keyvault/keys/%{byo_prefix}-dev-key"

google-beta/resource_container_azure_node_pool_generated_test.go

@@ -245,7 +245,7 @@ resource "google_container_azure_node_pool" "primary" {
 
   name      = "tf-test-node-pool-name%{random_suffix}"
   subnet_id = "/subscriptions/%{azure_sub}/resourceGroups/%{byo_prefix}-dev-byo/providers/Microsoft.Network/virtualNetworks/%{byo_prefix}-dev-vnet/subnets/default"
-  version   = "1.21.5-gke.2800"
+  version   = "1.21.6-gke.1500"
 
   annotations = {
     annotation-two = "value-two"