update live test

Author: cxznmhdcxz

src/azure-cli/azure/cli/command_modules/vm/tests/latest/recordings/test_copy_vm_restore_point.yaml

@@ -13523,7 +13523,7 @@ def test_copy_vm_restore_point(self, resource_group):
             'vnet': 'vnet1'
         })
 
-        vm = self.cmd('vm create -n {vm_name} -g {rg} --image ubuntu2204 --admin-username vmtest --subnet {subnet} --vnet-name {vnet} --nsg-rule NONE').get_output_in_json()
+        vm = self.cmd('vm create -n {vm_name} -g {rg} --image ubuntu2204 --size Standard_B2ms --admin-username vmtest --subnet {subnet} --vnet-name {vnet} --nsg-rule NONE').get_output_in_json()
 
         # Disable default outbound access
         self.cmd('network vnet subnet update -g {rg} --vnet-name {vnet} -n {subnet} --default-outbound-access false')