fix: Fix binary authorization deprecation warning

[flamarion]

Once the enable_binary_authorization is deprecated the following warning is issued during the terraform plan.

╷
│ Warning: Argument is deprecated
│
│   with module.wandb.module.app_gke.google_container_cluster.default,
│   on .terraform/modules/wandb/modules/app_gke/main.tf line 9, in resource "google_container_cluster" "default":
│    9:   enable_binary_authorization = true
│
│ Deprecated in favor of binary_authorization.
│
│ (and one more similar warning elsewhere)
╵

To fix the warning the new binary_authorization block to supply the same functionality of enable_binary_authorization

[flamarion]

Duplicated. The #30 fix the same thing