resource security_zones adding new object forces replacement

[mmaciejc]

Order is not important as this is map:

resource "fmc_security_zones" "module" {
      ~ id     = "30a97157-ccb1-42a9-a72a-f3c8b23cbb9f" -> (known after apply)
      ~ items  = {
          + "DMZ_1" = {
              + id             = (known after apply)
              + interface_type = "ROUTED" # forces replacement
              + type           = "SecurityZone"
            },
          ~ "DMZ_2" = {
              ~ id             = "2c779762-b750-11ef-ad56-7211a706a468" -> (known after apply)
                # (2 unchanged attributes hidden)
            },
          + "OUTSIDE" = {
              + id             = (known after apply)
              + interface_type = "ROUTED" # forces replacement
              + type           = "SecurityZone"
            },

Resource should only add new zones and leave old untouched.