Acme::Client::Error::UnsupportedOperation: Directory at https://acme-v02.api.letsencrypt.org/directory does not include `new_account`

https://sentry.gitlab.net/gitlab/gitlabcom/issues/1037059/

Acme::Client::Error::UnsupportedOperation: Directory at https://acme-v02.api.letsencrypt.org/directory does not include `new_account`
  acme/client/resources/directory.rb:26:in `block in endpoint_for'
    raise Acme::Client::Error::UnsupportedOperation,
  acme/client/resources/directory.rb:25:in `fetch'
    directory.fetch(key) do |missing_key|
  acme/client/resources/directory.rb:25:in `endpoint_for'
    directory.fetch(key) do |missing_key|
  acme/client.rb:299:in `endpoint_for'
    @directory.endpoint_for(key)
  acme/client.rb:59:in `new_account'
    response = post(endpoint_for(:new_account), payload: payload, mode: :jws)
...
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Directory at https://acme-v02.api.letsencrypt.org/directory does not include `new_account`