Hardcoded AWS account ID in variables.tf

[soulshake]

The Configure Access to EKS cluster workflow step always fails at kubectl get ns with error: You must be logged in to the server (Unauthorized).

Github actions apparently (even when it's not defined as a secret?) automatically replaces the account ID with *** in log output so this was finally tracked down by running kubectl --namespace=kube-system describe configmaps aws-auth and noticing an unfamiliar account ID, which I then found hardcoded in variables.tf.